Fiber optic system for narrow width fiber optic connectors, adapters and transceivers

ABSTRACT

Embodiments disclosed herein are directed to a device and system of devices including: a connector comprising a housing comprising a groove lengthwise in a surface of the housing and a push-pull tab comprising a protrusion, a widthwise recess on the connector housing accepting protrusions on a removable anchor device that retains the connector in a port, wherein the push-pull tab releases the connector from the port using protrusions on the anchor device and the receiver device comprising one or more ports for receiving one or more connector types; and the receiver device comprising one or more ports without an anchor; said port secures a second connector type comprising a latch release mechanism; and the receiver device ports are opposite one another; wherein the opposite ports can accept a first connector and a second connector; wherein the first connector release mechanism and differs from the second connector release mechanism.

CROSS-REFERENCE TO RELATED-APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.17/169,539 filed on Feb. 7, 2021, which is a continuation of Ser. No.16/782,711 filed on Feb. 5, 2020 which is a continuation of U.S. patentapplication Ser. No. 16/176,661 filed on Oct. 31, 2018, now U.S. Pat.No. 10,585,247 granted on Mar. 10, 2020, entitled “MODULAR CONNECTOR ANDADAPTER DEVICES” which is a divisional filed, under 35 U.S.C 120, ofU.S. Ser. No. 15/881,309 filed on Jan. 26, 2018, now U.S. Pat. No.10,185,100 granted Jan. 22, 2019 entitled “Modular Connector and AdapterAssembly using a Removable Anchor Device”, which claims the benefit ofpriority of U.S. Provisional No. 62/581,961 filed Nov. 6, 2017, entitled“Narrow Width Adapters and Connectors with Modular Latching Arm,” U.S.Provisional Application No. 62/546,920 filed Aug. 17, 2017, entitled“Narrow Width Adapters and Connectors with Modular Latching Arm,” U.S.Provisional Application No. 62/457,150 filed on Feb. 9, 2017, entitled“Optical Fiber Connector,” and U.S. Provisional No. 62/452,147, filedJan. 30, 2017, entitled “Narrow Width Adapters and Connectors withModular Latching Arm,” each of which is incorporated herein by referencein its entirety.

BACKGROUND

The present disclosure relates generally to connectors having remoterelease, and more specifically to narrow width adapters and connectors,such as narrow pitch distance Lucent Connector (LC) duplex adapters andnarrow width multi-fiber connectors.

The prevalence of the Internet has led to unprecedented growth incommunication networks. Consumer demand for service and increasedcompetition has caused network providers to continuously find ways toimprove quality of service while reducing cost.

Certain solutions have included deployment of high-density interconnectpanels. High-density interconnect panels may be designed to consolidatethe increasing volume of interconnections necessary to support thefast-growing networks into a compacted form factor, thereby increasingquality of service and decreasing costs such as floor space and supportoverhead. However, the deployment of high-density interconnect panelshas not been fully realized.

In communication networks, such as data centers and switching networks,numerous interconnections between mating connectors may be compactedinto high-density panels. Panel and connector producers may optimize forsuch high densities by shrinking the connector size and/or the spacingbetween adjacent connectors on the panel. While both approaches may beeffective to increase the panel connector density, shrinking theconnector size and/or spacing may also increase the support cost anddiminish the quality of service.

In a high-density panel configuration, adjacent connectors and cableassemblies may obstruct access to individual release mechanisms. Suchphysical obstructions may impede the ability of an operator to minimizethe stresses applied to the cables and the connectors. For example,these stresses may be applied when a user reaches into a dense group ofconnectors and pushes aside surrounding optical fibers and connectors toaccess an individual connector release mechanism with his/her thumb andforefinger. Overstressing the cables and connectors may produce latentdefects, compromise the integrity and/or reliability of theterminations, and potentially cause serious disruptions to networkperformance.

While an operator may attempt to use a tool, such as a screwdriver, toreach into a dense group of connectors and activate a release mechanism,adjacent cables and connectors may obstruct the operator's line ofsight, making it difficult to guide the tool to the release mechanismwithout pushing aside the adjacent cables. Moreover, even when theoperator has a clear line of sight, guiding the tool to the releasemechanism may be a time-consuming process. Thus, using a tool may not beeffective at reducing support time and increasing the quality ofservice.

Small Form Factor Pluggable Transceivers (SFP) are used presently intelecommunication infrastructures within rack mounted copper-to-fibermedia converters, and are also known as Ethernet switches and/orpatching hubs. These infrastructure Ethernet and fiber optic connectionsare evolving quickly to increase connection density due to limited spacefor such equipment. Although fiber optic connectors have become smallerover the years, they have not been designed to be any smaller thannecessary to plug into commonly sized and readily available SFPs.However, as transceiver technologies develop, smaller SFPs will be usedto create higher density switches and/or patching hub equipment.Accordingly, there is a need for fiber optic connectors that will meetthe needs of future developments in smaller SFPs.

SUMMARY

In summary, one aspect provides a connector comprising: a front bodycomprising: a top and a bottom, a groove running lengthwise on the topof the front body, a recess running widthwise on a surface of the frontbody, and a rear body detachably connected to the front body forming ahousing, wherein a portion of the rear body fits inside the front bodywhen detachably connected; and a push-pull tab comprising a frontportion, a rear portion, and one or more side portions, wherein thepush-pull tab is detachably connected to the housing using the one ormore side portions, wherein the front portion sits in the groove.

Another aspect provides a port device comprising: one or more ports forreceiving a connector having a top and a bottom; the one or more portscomprising at least one cutout on the top; and the one or more portscomprising at least one guide rail on the bottom, wherein the at leastone cutout is configured to receive an interchangeable anchor device.The port device may have opposing ports to establish a communicationsignal path.

A further aspect provides a network system comprising: a connectorcomprising a housing comprising a groove running widthwise on a surfaceof the housing; and a push-pull tab comprising a complementary groove,wherein the push-pull tab is detachably connected to the housing; and areceiver device comprising one or more ports for receiving theconnector, the one or more ports having an interchangeable anchor deviceincluding a first portion and a second portion; wherein the groove isconfigured to receive the first portion of the interchangeable anchordevice when the connector is inserted into the receiving element, andwherein the complimentary groove is configured to receive the secondportion of the interchangeable anchor device when the connector isinserted into the receiving element, the push-pull tab being configuredto disengage the second portion of the interchangeable anchor devicefrom the complementary groove when the push-pull tab is moved in adirection away from the connector, thereby disengaging the first portionof the interchangeable anchor device from the grove of the connector.

A further aspect provides an interchangeable anchor device secured in aport of the port device. The anchor device includes portions thatinterface with the corresponding port internal structure that holds theanchor device firmly fixed within the port. The anchor device includesmultiple portions that engage corresponding structure on the connectorfront body that helps with connector alignment in the port, and preventsunintentional withdrawal or misalignment of the interconnection of oneor more connectors unless connector removal is initiated using a releasemechanism.

A further aspect provides additional anchor points lengthwise along theconnector housing for securing the push-pull tab release mechanism tothe connector including portions to prevent disengagement of thepush-pull tab from the groove, from around the back body, or from thefront portion of the connector during insertion and release of theconnector from the port.

A further aspect provides for mix and match of connector types within anadapter or transceiver allowing a MPO connector and LC connector tocommunicate, and a MPO connector with a first or second releasemechanism or a first or second boot to be interconnected, orinterconnected with a LC type connector with the first or second releasemechanism or the first or second boot. The interconnecting of connectortypes included, but are not limited, to LC connector with the firstrelease mechanism and the second boot interconnected with a LC connectorwith the second release mechanism and the second boot. Anothernon-limiting interconnection schema is a MPO connector with a secondrelease mechanism and the first boot interconnected with a LC connectorwith the second release mechanism and the second boot.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a perspective view of a prior art standard 6.25 mm pitch LCconnector SFP;

FIG. 1B is a perspective view of a prior art standard 6.25 mm pitch LCadapter;

FIG. 1C is a top view of the prior art adapter of FIG. 1B;

FIG. 1D is a front view of the prior art adapter of FIG. 1B, showing the6.25 mm pitch;

FIG. 2A is a perspective view of a prior art LC duplex connector;

FIG. 2B is a perspective view of a prior art LC duplex connector with aremote release pull tab;

FIG. 2C is a top view of a prior art LC connector used in theembodiments shown in FIGS. 2A and 2B;

FIG. 2D is a side view of the prior art LC connector of FIG. 2C;

FIG. 3 is a perspective view of a future narrow pitch LC SFP forreceiving connectors disclosed herein according to aspects of thepresent disclosure;

FIG. 4A is a perspective view of one embodiment of a narrow pitch LCadapter according to aspects of the present disclosure;

FIG. 4B is a top view of the narrow pitch LC adapter of FIG. 4A;

FIG. 4C is a front view of the narrow pitch LC adapter of FIG. 4A,showing a 4.8 mm pitch;

FIG. 5 is a perspective view of one embodiment of a narrow pitch LCduplex connector with remote release according to aspects of the presentdisclosure;

FIG. 6A is a top view of an LC connector used in the embodiment of FIG.5 according to aspects of the present disclosure;

FIG. 6B is a side view of the LC connector of FIG. 6A according toaspects of the present disclosure;

FIG. 7 is a perspective view of narrow pitch LC duplex connector of FIG.5, with the release mechanism being exploded from the remainder of theconnector;

FIG. 8 is a perspective disassembled view of the narrow pitch LC duplexconnector of FIG. 5 according to aspects of the present disclosure;

FIG. 9 is a perspective view of a prior art standard multiple-fiberpush-on/pull-off (MPO) SFP;

FIG. 10A is a perspective view of a prior art standard MPO connector;

FIG. 10B is a top view of the prior art MPO connector of FIG. 10A,having a width of 12.4 mm;

FIG. 10C is a front view of the prior art MPO connector of FIG. 10A;

FIG. 11 is a perspective view of a future narrow width multi-fiber SFPfor receiving connectors disclosed herein according to aspects of thepresent disclosure;

FIG. 12A is a perspective view of one embodiment of a narrow widthmulti-fiber connector (e.g. female MPO connector) with remote releaseaccording to aspects of the present disclosure;

FIG. 12B is a top view of the narrow width multi-fiber connector of FIG.12A, having a width of 9.6 mm according to aspects of the presentdisclosure;

FIG. 12C is a front view of the narrow width multi-fiber connector ofFIG. 12A according to aspects of the present disclosure;

FIG. 13A is a perspective view of a narrow width multi-fiber connectorinserted into a narrow width SFP having an SFP latch according toaspects of the present disclosure;

FIG. 13B is a perspective view of a narrow width multi-fiber connectorinserted into a narrow width adapter having an adapter latch accordingto aspects of the present disclosure;

FIG. 14A is a side view of a narrow width multi-fiber connector of FIG.13A partially broken away and having a recess engaged with an SFP latchin a normal pull tab position according to aspects of the presentdisclosure;

FIG. 14B is a zoomed view of FIG. 14A

FIG. 15A is a side view of the narrow width multi-fiber connector ofFIG. 13A partially broken away, and being disengaged from the SFP latchby retracting the pull tab according to aspects of the presentdisclosure;

FIG. 15B is a zoomed view of FIG. 15A;

FIG. 16A is a perspective view of a narrow width multi-fiber connectorhaving an adapter latch according to aspects of the present disclosure;

FIG. 16B is a perspective disassembled view of a narrow widthmulti-fiber connector having an adapter latch according to aspects ofthe present disclosure;

FIG. 17A is a front view of the narrow pitch adapter of FIG. 16A,showing a 3.80 mm pitch;

FIG. 17B is a side view of the narrow width connector of FIG. 16A;

FIG. 17C is a section view taken in a plane including line A-A of FIG.17B showing a plug frame fitting inside a SFP according to aspects ofthe present disclosure;

FIG. 17D is a perspective view of the narrow width connector of FIG. 16Awith the push/pull tab in a normal position in the SFP latching recessaccording to aspects of the present disclosure;

FIG. 17D.1 is a zoomed view of FIG. 17D;

FIG. 17E is a perspective view of the narrow width connector of FIG. 16Awith the push/pull tab in a pulled back position with respect to the SFPlatching recess according to aspects of the present disclosure;

FIG. 17E.1 is a zoomed view of FIG. 17E;

FIG. 18A is a perspective view of a small form factor transceiveraccording to aspects of the present disclosure;

FIG. 18B is a front view of the transceiver of FIG. 18A according toaspects of the present disclosure;

FIG. 18C is a fragmentary section taken in the plane including line A-Aof FIG. 18B;

FIG. 19 is a perspective view of a SFP having one connector inserted;

FIG. 20A is a fragmentary section taken in a plane including line B-B ofFIG. 20B showing a SFP holding a connector according to aspects of thepresent disclosure;

FIG. 20B is a front view of the SFP holding the connector of FIG. 20A;

FIG. 21 is a perspective view of the SFP having one connector insertedand with the push/pull tab retracted according to aspects of the presentdisclosure;

FIG. 22A is a section taken in the plane including line B-B of FIG. 22Bshowing the SFP latch in a lifted position to unlatch the connectoraccording to aspects of the disclosure;

FIG. 22B is a front view of the SFP and connector of FIG. 22A;

FIG. 23 is a perspective view of a connector inserted into an adapteraccording to aspect of the present disclosure;

FIG. 24A is a section taken in the plane including line A-A of FIG. 24Bshowing the connector and the adapter of FIG. 24A with the latch in thenormal position;

FIG. 24B is a front view of the connector and the adapter of FIG. 24A;

FIG. 25 is a perspective view of a connector inserted into an adapterwith the push/pull tab retracted according to aspects of the presentdisclosure;

FIG. 26A is a section taken in the plane including line B-B of FIG. 26Bshowing the connector and adapter of FIG. 25 having the adapter latch inan unlatching position according to aspects of the present disclosure;

FIG. 26B is a front view of the connector and adapter of FIG. 26A;

FIG. 27A is a perspective of the adapter showing the latch hooksexploded therefrom prior to assembly with the adapter;

FIG. 27B is a perspective of the assembled adapter;

FIG. 27C is a section taken in the plane including line A-A of FIG. 27D;

FIG. 27D is a front view of the assembled adapter;

FIG. 28A is an exploded perspective view of a connector according toaspects of the present disclosure;

FIG. 28B is a perspective view of a connector according to aspects ofthe present disclosure;

FIG. 28C is a perspective view of connector of FIG. 28B with a differentpush-pull tab knob according to aspects of the present disclosure;

FIG. 28D is an exploded perspective view of the connector of FIG. 28C;

FIG. 28E is a bottom view of the connectors of FIGS. 28B and 28Caccording to aspects of the present disclosure;

FIG. 29A is a top dimensional view of a connector according to aspectsof the present disclosure;

FIG. 29B is a side dimensional view of a connector according to aspectsof the present disclosure;

FIG. 30A is a perspective view of a connector with the push-pull tab inthe forward position according to aspects of the present disclosure;

FIG. 30B is a perspective view of a connector with the push-pull tab inthe rearward position according to aspects of the present disclosure;

FIG. 31A is a perspective view of a connector with the push-pull tabaccording to aspects of the present disclosure;

FIG. 31B is a zoomed perspective view of the connector of FIG. 31A withthe push-pull tab according to aspects of the present disclosure;

FIG. 31C is another zoomed perspective view of a connector with thepush-pull tab to aspects of the present disclosure;

FIG. 32A is a perspective view of a connector with the push-pull tabaccording to aspects of the present disclosure;

FIG. 32B is a zoomed perspective view of a connector with the push-pulltab according to aspects of the present disclosure;

FIG. 32C is another zoomed perspective view of a connector with thepush-pull tab to aspects of the present disclosure;

FIG. 33A illustrates an example CS connector according to someembodiments with two separate cross-sectional areas identified;

FIG. 33B is a detailed cross sectional view of a CS connector at thefirst identified cross-sectional area of the CS connector identified byline X-X in FIG. 33A;

FIG. 33B.1 is a zoomed view of FIG. 33B;

FIG. 33C is a detailed cross sectional view of a CS connector at thesecond identified cross-sectional area of the CS connector identified byline Y-Y in FIG. 33A;

FIG. 33C.1 is a zoomed view of FIG. 33C;

FIGS. 34.1-34.3 are perspective views of a group of connectors withpush-pull tabs of differing increasing lengths according to aspects ofthe present disclosure;

FIG. 35A is a detailed dimensional front view of a duplexadapter/transceiver according to aspects of the present disclosure;

FIG. 35B is a detailed dimensional cross sectional view taken in theplane including line a-a of FIG. 35A of a duplex adapter/transceiveraccording to aspects of the present disclosure;

FIG. 35C is a detailed dimensional cross sectional view taken in a planeincluding line b-b of FIG. 35A of a duplex adapter/transceiver accordingto aspects of the present disclosure;

FIG. 36A is a perspective view of a duplex adapter/transceiver withremovable anchors installed;

FIG. 36B is a perspective view of a removable anchor device;

FIG. 36C is another perspective view of a removable anchor device;

FIG. 37A is another a perspective view of a duplex adapter/transceiverwith removable anchors installed;

FIG. 37B is another perspective view of a removable anchor device;

FIG. 37C is another perspective view of a removable anchor device;

FIG. 38A is another a perspective view of a duplex adapter/transceiverwith removable anchors installed;

FIG. 38B is another perspective view of a removable anchor device;

FIG. 38C is another perspective view of a removable anchor device;

FIG. 39 is a detailed dimensional front view of a duplexadapter/transceiver with a removable anchor installed according toaspects of the present disclosure;

FIG. 40A is a section taken along line a′-a′ of FIG. 39;

FIG. 40B is a section view taken in the plane including line b′-b′ ofFIG. 39;

FIG. 40C is a perspective view of the adapter configured to accept apull release connector with hooks positioned or inserted into adapter asshown in the transparent view and section view;

FIG. 40C.1 is a zoomed view of FIG. 40C with an outer housing of theadapter shown as transparent;

FIG. 40C.2 is a zoomed view of FIG. 40C with an outer housing partiallybroken away

FIG. 40D is a perspective view of an adapter hook prior to insertioninto an adapter;

FIG. 40D.1 is a zoomed side view of the adapter of FIG. 40D with partsbroken away to show internal construction;

FIG. 40E is a perspective view of an adapter hook partially insertedinto an adapter;

FIG. 40E.1 is a zoomed side view of the adapter of FIG. 40E with partsbroken away to show internal construction;

FIG. 40F is a perspective view of an adapter hook fully inserted into anadapter;

FIG. 40F.1 is a zoomed side view of the adapter of FIG. 40F with partsbroken away to show internal construction;

FIG. 41A is a perspective view of a CS connecter being inserted into anadapter/transceiver;

FIG. 41B is a perspective view of a CS connecter after being insertedinto an adapter/transceiver;

FIG. 42A.1 is a cutaway view of a hook inserted into an adapter withouta connector installed;

FIG. 42A.2 is side cutaway view of a CS connector being inserted into anadapter/transceiver with a hook of FIG. 42A.1;

FIG. 42A.3 is a side cutaway view of the connector of FIG. 42A.2partially inserted into the adapter with a hook of FIG. 42A.1;

FIG. 42A.3.1 is a zoomed view of the hook engaging the connector rampand groove of FIG. 42A.3;

FIG. 42A.4 is side cutaway view of the connector of FIG. 42A.2 fullyinserted into the adapter with a hook of FIG. 42A.1;

FIG. 42A.4.1. is a zoomed view of the hook in a widthwise groove theconnector of FIG. 42A.4 fully inserted into the adapter of FIG. 42A.1;

FIG. 42B.1 is a cutaway view of adapter as pull release connector isbeing inserted into an adapter with a hook;

FIG. 42B.2 is a bottom cutaway view of FIG. 42B.1;

FIG. 42B.3 is a cutaway view of the connector partially inserted intothe adapter of FIG. 42B.1;

FIG. 42B.4 is a bottom cutaway view of FIG. 42B.3;

FIG. 42B.5 is a cutaway view of the connector fully inserted into theadapter of FIG. 42B.1;

FIG. 42B.6 is a bottom cutaway view of FIG. 42B.5;

FIG. 42C is a cutaway perspective view of the pull release connectorinserted into the adapter;

FIG. 42C.1 is a zoomed view of FIG. 42C;

FIG. 42C.2 is a perspective of a reverse latch hook;

FIG. 42C.3 is the perspective of FIG. 42C partially broken away;

FIG. 42D is a cutaway side view of the pull release connector pullingthe tab rearward first amount;

FIG. 42D.1 is a zoomed view of FIG. 42D;

FIG. 42D.2 is another zoomed view of FIG. 42D;

FIG. 42D.3 is a cutaway side view of the pull release connector pullingthe tab rearward a second, further amount;

FIG. 42D.4 is a zoomed view of FIG. 42D.3;

FIG. 42D.5 another zoomed view of FIG. 42D.3;

FIG. 42E.1 is a cutaway view of a CS connector similar to FIG. 33A fullyinserted into the adapter of FIG. 60A;

FIG. 42E.2 is a cutaway view of a CS connector similar to FIG. 33A fullyinserted into the adapter of FIG. 60A;

FIG. 42F.1 is a cutaway view of a CS connector similar to FIG. 33A beingremoved in the direction of the arrow;

FIG. 42F.2 is a cutaway view of a CS connector similar to FIG. 33A beingfurther removed in the direction of the arrow;

FIG. 42F.3 is a cutaway view of a CS connector similar to FIG. 33Areleased from the hook contained in the adapter of FIG. 60A;

FIG. 43 is a perspective view of a CS connecter;

FIG. 43A is a zoomed view of FIG. 43 illustrating a horizontal groove;

FIG. 44A is a side cutaway view of a CS connector inserted into anadapter/receiver;

FIG. 44B is another side cutaway view of a CS connector inserted into anadapter/receiver;

FIG. 45A shows an illustrative top view of a CS connector inserted intoan adapter/receiver;

FIG. 45B is a section taken as indicated by line C-C of FIG. 45A;

FIG. 45C is a section taken as indicated by line D-D of FIG. 45A;

FIG. 46A is a section taken in the plane E-E of FIG. 46B;

FIG. 46B show an illustrative top view of a CS connector inserted intoone of two receptacles in an adapter/receiver;

FIG. 46C shows an illustrative top view of a CS connector inserted intoanother of two receptacles of the adapter/receiver;

FIG. 46D is a section taken in the plane including line F-F of FIG. 46C;

FIG. 47A shows a dimensional detailed top view of the CS connector;

FIG. 47B shows a dimensional detailed side view of the CS connector;

FIG. 47C shows a dimensional detailed bottom view of the CS connector;

FIG. 48A shows a front view of another dimensional detailed view of theCS connector;

FIG. 48B is a lateral section of the CS connector of FIG. 48A;

FIG. 48C is a zoomed vertical and longitudinal section of the CSconnector taken on line e-e of FIG. 48A;

FIG. 48D is a zoomed vertical and longitudinal section of the CSconnector taken on line f-f of FIG. 48A;

FIG. 49A.1 shows a fan-out method for distributing the connection to aslower version of the system;

FIG. 49A.2 shows a cassette method for distributing the connection to aslower version of the system;

FIG. 49B shows an alternative for distributing the connection to aslower version of the system without requiring a fan-out and/or acassette method;

FIG. 50A shows an exploded perspective view of a duplex connector of thepull release type with a dust cap;

FIG. 50B shows an assembled perspective view of FIG. 50A;

FIG. 51A.1 is a top view of a duplex (2 fiber) connector of thepush/pull release type with a pull tab housing configured to engage theconnector outer housing;

FIG. 51A.2 is a side view of the connector of FIG. 51A.1;

FIG. 51B.1 is a top view of a duplex (2 fiber) connector with behind thewall (BTW) boot of the push/pull release type with a pull tab housingconfigured to engage the connector outer housing;

FIG. 51B.2 is a side view of the connector of FIG. 51B.1;

FIG. 52A is an exploded perspective view of a male MPO connector of FIG.52B;

FIG. 52B is an assembled view of a female MPO connector of FIG. 51B.1;

FIG. 52C is a perspective view prior to insertion into an adapter of theMPO connector of FIG. 52B (at left side of adapter) and the male MPOconnector of FIG. 52A (on right side of adapter);

FIG. 52D is the fully inserted view of the connectors of FIG. 52C withthe shadow lines showing the hook (of FIG. 38B) engaged the latch recessas shown in FIGS. 42A-B;

FIG. 52E is a perspective view of a MT thin ferule for a compact, lowprofile connector of the type shown in FIG. 52B;

FIG. 53A is a side view of a connector having a push/pull tab of a firstembodiment;

FIG. 53B is a zoomed top view of the push/pull tab of FIG. 53A;

FIG. 53C is a side view of a connector having a push/pull tab of asecond embodiment;

FIG. 53D is a zoomed top view of the tab of FIG. 53C;

FIG. 53E is a side view of a connector having a push/pull tab of a thirdembodiment;

FIG. 53F is a zoomed top view of the tab of FIG. 53E;

FIG. 53G is a side view of a connector having a push/pull tab of afourth embodiment;

FIG. 53H is a zoomed top view of the tab of FIG. 53G;

FIG. 53I is a side view of a connector having a push/pull tab (or knob)of a fifth embodiment;

FIG. 53J is a zoomed top view of the knob of FIG. 53I;

FIG. 54A is a top, side perspective view of the bend latch push/pulltype compact, low profile connector in the up position;

FIG. 54A.1 is a zoomed view of the low profile connector of FIG. 54A;

FIG. 54B is a top perspective view of the bend latch push/pull typeconnector in the flush position;

FIG. 54B.1 is a zoomed view of the low profile connector of FIG. 54B;

FIG. 54C is a side view perspective view of the bend latch push/pulltype in the up position;

FIG. 55A is a perspective view of a pull release connector prior toattaching the pull tab onto connector body;

FIG. 55B is a side view of the push/pull type tab attached to theconnector body;

FIG. 55C is a side perspective view of the push/pull type tab attachedto the connector body;

FIG. 56A is an exploded perspective view of the CS connector with alatch having a ruggedized boot;

FIG. 56B is a top view of the assembled CS connector of FIG. 56A;

FIG. 56C is a side view of the assembled CS connector of FIG. 56A;

FIG. 57A is an exploded perspective view of the CS connector with latchhaving a behind the wall (BTW) boot;

FIG. 57B is a top view of the assembled CS connector of FIG. 57A;

FIG. 57C is a side view of the assembled CS connector of FIG. 57Ashowing direction of latch movement to release from adapter port housing(not shown);

FIG. 58A is an exploded perspective view of an adapter with a flangereceiving a hook of FIG. 36A, 37A or 38A in a port of the adapterhousing;

FIG. 58B is a front perspective view of an adapter port of FIG. 58Aafter receiving a hook of FIG. 36A, 37A or 38A showing alignment sleeveholder of FIG. 60F configured to accept a push/pull type duplexconnector;

FIG. 58C is a front view of adapter port for receiving a MPO connectorof FIG. 52 with hook installed for push/pull MPO type connector;

FIG. 58D is a top view of a push/pull type CS connector with a BTW boot;

FIG. 58D.1 is a side view of the connector of FIG. 58D;

FIG. 59A.1 is a perspective view from a first vantage of a low profileduplex (2 fiber) adapter with a mounting flange for panel mounting withhook inserted for receiving a push/pull type CS connector of FIG. 58D;

FIG. 59A.2 is a perspective view of the connector of FIG. 59A.1 from asecond vantage;

FIG. 59B.1 is a perspective view from a first vantage of a low profileduplex (2 fiber) flangeless adapter of FIGS. 59A.1 and 59A.2;

FIG. 59B.2 is a perspective view of the connector of FIG. 59B.1 from asecond vantage;

FIG. 59C.1 is a perspective front view of a dual port (4 fiber) lowprofile adapter without hooks of FIG. 36A-C, 37A-C or 38A-C installedand alignment sleeve holder installed (top view);

FIGS. 59C.2-59C.3 are perspective views just prior to installing hooksinto an adapter;

FIGS. 59C.4-59C.5 are a perspective front views after hooks installed(bottom view);

FIG. 59D.1 is a side view of a CS connector of FIG. 53C being releasedby pulling on the tab in the direction of the arrow a first amount;

FIG. 59D.2 is a zoomed view of the connector of FIG. 59D;

FIG. 59D.3 is a zoomed view of the connector of FIG. 59D with the tabpulled somewhat farther than in FIG. 59D.1;

FIG. 59E.1 is a side view of a CS connector of FIG. 53C being releasedby pulling on the tab in the direction of the arrow pulled a second,farther amount;

FIG. 59E.2 is a zoomed view of the connector of FIG. 59E.1;

FIG. 59E.3 is an enlarged fragment of the connector of FIG. 59E.1 pulledsomewhat farther than in FIG. 59E.2;

FIG. 59F.1 is a perspective view of a low profile dual port (4 fiber)adapter;

FIG. 59F.2 is a perspective view of the adapter of FIG. 59F.1 beingfitted with an adapter hook of FIGS. 36A-C;

FIG. 59F.3 is a perspective view of the adapter with hooks of FIG. 59F.2inserted;

FIG. 59F.4 is a perspective view of the adapter with hooks of FIG. 59F.3with a push/pull connector of FIG. 53C prior to insertion into theadapter;

FIG. 59F.5 is a perspective view of the connector of FIG. 59F.4 insertedinto adapter port to allow conversion of adapter from latch type (FIGS.56A-C) to push/pull type (FIG. 53C);

FIG. 59G.1 is a perspective view of an adapter without hooks;

FIG. 59G.2 is a perspective view of the adapter of FIG. 59G.1 and alatch CS connector or bend latch connector prior to insertion into theadapter;

FIG. 59G.3 is a perspective view of a low profile dual port (4 fiber)adapter without hooks of FIG. 36A-C, 37A-C or 38A-C illustrating theinsertion of a latch CS connector or bend latch CS connector into anadapter;

FIG. 59H is a perspective view of a low profile dual port (4 fiber)adapter without hooks prior to insertion of a CS connector configured asa latch type.

FIG. 60A is an exploded perspective view of low profile dual port (4fiber) adapter with hooks of FIG. 36A, 37A or 38A;

FIG. 60B is a front perspective view of low profile dual port (4 fiber)adapter without hooks and inserted alignment sleeve holder of FIG. 60A;

FIG. 60C is an exploded perspective view with a section view of a portof a low profile dual port (4 fiber) adapter;

FIG. 60D is the perspective view of FIG. 60C with the sleeves insertedinto an adapter housing port;

FIG. 60D.1 is a zoomed view from FIG. 60D;

FIG. 60E is a zoomed view of the FIG. 60C section view with the sleevesinserted and the alignment sleeve holders partially inserted into anadapter housing port;

FIG. 60F is a perspective view of FIG. 60C perspective view with thesleeve and alignment sleeve holder fully inserted into an adapterhousing port;

FIG. 60F.1 is a zoomed view of FIG. 60F;

FIG. 60G is a bottom perspective view of adapter;

FIG. 60G.1 is a zoomed view of FIG. 60F from the bottom of the adapter;

FIG. 60H is a cutaway side view of an alignment sleeve holder fullyinserted into an adapter housing port;

FIG. 60H.1 is a zoomed view showing the cuts of an alignment sleeveholder fully inserted into an adapter housing port;

FIG. 61A.1 is a perspective view of a flanged dual port (4 fiber) lowprofile adapter from a first vantage;

FIG. 61A.2 is a perspective of the adapter of FIG. 61A.1 from a secondvantage;

FIG. 61B.1 is a perspective view of a flangeless dual port (4 fiber) lowprofile adapter from a first vantage;

FIG. 61B.2 is a perspective of the adapter of FIG. 61B.1 from a secondvantage;

FIG. 61C is a front perspective view of a dual port (4 fiber) lowprofile adapter with hooks inserted, and a top view of the same;

FIG. 61C.1 is a top perspective view of FIG. 61C;

FIG. 62A is a zoomed view just prior to insertion of a latch typeconnector (e.g. FIG. 56A-C or 57A-C) into a duplex (2 fiber) low profileadapter housing port without a hook;

FIG. 62B is a zoomed view showing structural contact points withinadapter housing that engage a latch type connector (e.g. FIG. 56A-C or57A-C);

FIG. 62C is a zoomed side view showing a latch type connector partiallyinserted into a duplex (2 fiber) low profile adapter housing portwithout a hook;

FIG. 62D is a zoomed bottom view showing a latch type connectorpartially inserted into a duplex (2 fiber) low profile adapter housingport without a hook;

FIG. 62E is a zoomed top-side view showing a latch type connector fullyinserted into a duplex (2 fiber) low profile adapter housing portwithout a hook;

FIG. 62F is a zoomed bottom-side view showing a latch type connectorfully inserted into a duplex (2 fiber) low profile adapter housing portwithout a hook;

FIG. 62G is a cutaway view of a latch type CS connector similar to FIGS.56A-C fully inserted into an adapter of FIG. 60A;

FIG. 62H is a cutaway view of FIG. 62G where the connector latch isbeing pressed in the direction of the arrow to being releasing from theadapter port;

FIG. 62I is a cutaway view of FIG. 62H where the connector is beingpulled in the direction of the arrow to complete the releasing from theadapter port;

FIG. 63A is a perspective view prior to insertion of a latch typeconnector into either side a duplex (2 fiber) low profile adapter;

FIG. 63B is a perspective view of fully inserted latch type connectorsinto both sides of a duplex (2 fiber) low profile adapter;

FIG. 63C.1 is a cutaway perspective of the connector in the adapterhousing with the latch depressed (e.g., FIGS. 57A-C) prior to removal ofthe connector from the adapter housing, in the direction of the arrow,without a hook;

FIG. 63C.2 is a zoomed view of FIG. 63C.1;

FIG. 63C.3 is a further enlargement of FIG. 63C.2, but indicating adirection of removal of the connector from the adapter housing;

FIG. 63C.4 is a cutaway perspective view of the connector and theadapter housings showing partial removal of the connector from theadapter housing;

FIG. 63C.5 is a zoomed view of FIG. 63C.4;

FIG. 64A is a perspective view of prior to insertion of two duplex latchtype (e.g. FIGS. 57A-C) connectors, on either side of the dual (4 fiber)low profile adapter housing without hooks;

FIG. 64B is a perspective view after insertion of two duplex latch type(e.g. FIGS. 57A-C) connectors, on either side of the dual (4 fiber) lowprofile adapter housing without hooks;

FIG. 65A is a perspective view before insertion into a low profileduplex (2 fiber) adapter housing of a crimp boot latch type connectorinto a first port and a behind the wall (BTW) latch type connector intoa second port;

FIG. 65B is a perspective view after insertion into a low profile duplex(2 fiber) adapter housing of a crimp boot latch type connector into afirst port and a behind the wall (BTW) latch type connector into asecond port;

FIG. 66A is a perspective view of a duplex (2 fiber) adapter withoutflanges configured at a first adapter port with a hook and at a secondadapter port without hook;

FIG. 66B is a perspective view of the FIG. 66A adapter with a latch typeconnector inserted into the second adapter port and a push/pull typeconnector inserted into the first adapter port;

FIG. 67A is a perspective view of a dual port (4 fiber) adapter withoutflanges configured at a first adapter port with hooks and at a secondadapter port without hooks;

FIG. 67B is a perspective view of a dual port (4 fiber) adapter with apush/pull connector inserted into the first adapter port and a latchtype connector inserted into the second adapter port;

FIG. 68A is a perspective view of a duplex (2 fiber) adapter withflanges and a latch type connector inserted into a first port and apush/pull type connector inserted into a second port of the low profileadapter;

FIG. 68B is a perspective view of a dual (4 fiber) adapter with flangesand two latch type connectors inserted into one side and two push/pulltype connectors inserted into a second side of the low profile adapter;

FIG. 69A.1 is a side view of a tool to remove a hook from an adapterhousing port;

FIG. 69A.2 is a front view of the tool of FIG. 69A.1;

FIG. 69A.3 is a section of the tool as indicated by the section line onFIG. 69A.2;

FIG. 69B is a perspective view of the tool of FIG. 69A.1 being connectedto a hook of FIG. 36A, 37A or 38A;

FIG. 70A is a zoomed section view of the tool of FIGS. 69A.1-69A.3attached to the hook inserted in the adapter housing port;

FIG. 70B is a perspective view of the tool of FIGS. 69A.1-69A.3 attachedto the hook inserted in the adapter housing port as shown in FIG. 70A;

FIG. 70C is a zoomed section view of the tool of FIGS. 69A.1-69A.3attached to the hook partially removed from the adapter housing port;

FIG. 70D is a perspective view of the tool of FIGS. 69A.1-69A.3 attachedto the hook partially removed from the adapter housing port as shown inFIG. 70C;

FIG. 70E is a zoomed section view of the tool of FIGS. 69A.1-69A.3attached to the hook fully removed from the adapter housing port; and

FIG. 70F is a perspective view of the tool of FIGS. 69A.1-69A.3 attachedto the hook fully removed from the adapter housing port as shown in FIG.70E.

DETAILED DESCRIPTION

This disclosure is not limited to the particular systems, devices andmethods described, as these may vary. The terminology used in thedescription is for the purpose of describing the particular versions orembodiments only, and is not intended to limit the scope.

As used in this document, the singular forms “a,” “an,” and “the”include plural references unless the context clearly dictates otherwise.Unless defined otherwise, all technical and scientific terms used hereinhave the same meanings as commonly understood by one of ordinary skillin the art. Nothing in this disclosure is to be construed as anadmission that the embodiments described in this disclosure are notentitled to antedate such disclosure by virtue of prior invention. Asused in this document, the term “comprising” means “including, but notlimited to.”

The following terms shall have, for the purposes of this application,the respective meanings set forth below.

A connector, as used herein, refers to a device and/or component thereofthat connects a first module or cable to a second module or cable. Theconnector may be configured for fiber optic transmission or electricalsignal transmission. The connector may be any suitable type now known orlater developed, such as, for example, a ferrule connector (FC), a fiberdistributed data interface (FDDI) connector, an LC connector, amechanical transfer (MT) connector, a square connector (SC) connector,an SC duplex connector, or a straight tip (ST) connector. The connectormay generally be defined by a connector housing body. In someembodiments, the housing body may incorporate any or all of thecomponents described herein.

A “fiber optic cable” or an “optical cable” refers to a cable containingone or more optical fibers for conducting optical signals in beams oflight. The optical fibers can be constructed from any suitabletransparent material, including glass, fiberglass, and plastic. Thecable can include a jacket or sheathing material surrounding the opticalfibers. In addition, the cable can be connected to a connector on oneend or on both ends of the cable.

Various embodiments described herein generally provide a remote releasemechanism such that a user can remove cable assembly connectors that areclosely spaced together on a high-density panel without damagingsurrounding connectors, accidentally disconnecting surroundingconnectors, disrupting transmissions through surrounding connectors,and/or the like. Various embodiments also provide narrow pitch LC duplexconnectors and narrow width multi-fiber connectors, for use; forexample, with future narrow pitch LC SFPs and future narrow width SFPs.The remote release mechanisms allow use of the narrow pitch LC duplexconnectors and narrow width multi-fiber connectors in dense arrays ofnarrow pitch LC SFPs and narrow width multi-fiber SFPs.

FIG. 1A shows a perspective view of a prior art standard 6.25 mm pitchLC connector SFP 100. The SFP 100 is configured to receive a duplexconnector and provides two ports 102, each for receiving a respective LCconnector. The pitch 104 is defined as the axis-to-axis distance betweenthe central longitudinal axes of each of the two ports 102. FIG. 1Bshows a perspective view of a prior art standard 6.25 mm pitch LCadapter 106. The adapter 106 is also configured to receive a duplexconnector, and provides two ports 108, each for receiving a respectiveLC connector. FIG. 1C is a top view of the adapter 106 of FIG. 1B. Thepitch of the adapter 106 is defined similarly to that of the SFP 100, asthe axis-to-axis distance between the central longitudinal axes of eachof the two ports 108, as illustrated in FIG. 1D, which shows a frontview of the adapter 106.

FIG. 2A shows a prior art LC duplex connector 200 that may be used withthe conventional SFP 100 and the conventional adapter 106. The LC duplexconnector 200 includes two conventional LC connectors 202. FIG. 2B showsanother prior art LC duplex connector 204 having a remote release pulltab 206, and including two conventional LC connectors 208. As shown, theremote release pull tab includes two prongs 210, each configured tocouple to the extending member 212 of a respective LC connector 208.FIGS. 2C and 2D show top and side views, respectively, of theconventional LC connector 208, having a width of 5.6 mm, and furthershowing the extending member 212.

Various embodiments disclosed herein are configured for use with afuture SFP, such as the narrow pitch LC SFP 300 shown in FIG. 3, havinga pitch less than that of conventional 6.25 mm and 5.25 mm pitches.Various embodiments utilize LC type fiber optic connectors in duplexarrangements (having transmitted and receiving fibers) but with aconnector axis-to-axis distance that is less than the conventional 6.25mm and 5.25 mm pitches, as described further below.

According to another aspect, embodiments of narrow pitch duplex LCadapters are disclosed. FIGS. 4A to 4C show an embodiment of a narrowpitch adapter 400. The narrow pitch adapter 400 has ports 402 onopposite ends thereof, configured for mating two narrow pitch LC duplexconnectors according to aspects disclosed herein. FIG. 4B shows a topview of the adapter 400. FIG. 4C shows a front view, furtherillustrating that the adapter 400 has a pitch of 4.8 mm. The adapter 400is configured to receive a duplex LC connector, with a pitch of theadapter corresponding to the axis-to-axis distance between the LCconnectors of the LC duplex connector. Although the adapter 400 has apitch of 4.8 mm, various embodiments of narrow pitch adapters disclosedherein may have a different pitch that is less than that of the pitch ofconventional adapters, for example less than 6.25 mm and less than about5.25 mm. In some embodiments, the pitch may be about 4.8 mm or less.

In addition to the need for narrow connectors, there is a need forremote unlatching of the narrow connectors used in dense narrow SFParrays. This is because finger access to connectors is nearly impossiblewithout disruption to the service of adjacent optical fibers. Althoughthere are current designs of remotely unlatching fiber optic connectors,as shown for example in FIG. 2B, they have proven to be difficult tofunction as desired when plugged into the die cast construction that istypical of all SFP's. The die cast SFP is not one that is ever free ofsharp edges and internal flashing (burrs) that can interfere with thenormal flexing motion of the plastic latches of the fiber opticconnectors. The interference between metal edges and burrs may preventthe fiber optic connector's plastic latch from either becoming fullyengaged or easily disengaged, especially with latches that are remotelytriggered by pull tabs that project a distance behind the connector soas to keep fingers from disturbing adjacent optical fibers.

To make the latching/unlatching of the connectors from the SFP morereliable, various embodiments disclosed herein add a spring force to theremote latching component (pull tab), for example as shown and describedin relation to FIGS. 5, 7, 8 and 12 below, to ensure that the connectorlatches are allowed to return to the undisplaced position and therebybecome fully engaged inside the SFP's recess.

FIG. 5 shows one embodiment of a narrow pitch connector 500 according toaspects disclosed herein. The narrow pitch connector 500 is a duplex LCconnector including two LC connectors 502. Each of the LC connectors 502includes a respective ferrule 503 and a respective extending member orlatching arm 504. The connector 500 has a pitch of 4.8 mm, defined asthe axis-to-axis distance between the central axes of the LC connectors502. In other embodiments, the connector pitch may be less than that ofthe pitch of conventional connectors, for example less than 6.25 mm andless than about 5.25 mm. In some embodiments, the pitch may be about 4.8mm or less.

The connector 500 further includes a housing 506 having a bottom housing508 and a top housing 510. The bottom housing 508 includes side walls512. In various embodiments, the housing 506 of the connector 500 may bea switchable housing. The side walls 512 may be configured to open so asto facilitate opening of the housing 506, for example, to changepolarity of the connector 500. The side walls 512 may be raised towardsthe rear of the connector 500, as shown in FIG. 5. One advantage ofraising the side walls 512 towards the rear of the connector 500 iseasier access. In other embodiments, the side walls 512 may be raised atanother location.

The connector 500 further includes a pull tab 514 having a distal end516 and a proximal end 518. The pull tab 514 further includes a spring520 configured to provide a force such that the connector latching arms504 return to the undisplaced position and thereby become fully engagedinside the SFP's recess. The distal end 516 of the pull tab 514 may bepulled to (e.g., in the direction D of the arrow shown in FIG. 7)remotely release the connector 500 from an SFP or adapter. The proximalend 518 of the pull tab 514 is uniquely shaped so as to engage with theunique profile of the latching arms 504 of the narrow pitch LC connector500. The proximal end 518 engages both latching arms 504 of the duplexLC connector 500. That is, the proximal end 518 includes a single prongconfigured to engage the latching arms of both connectors 502. At theproximal end 518 of the pull tab 514 there are outwardly pointing pins522 configured to rest directly above and slide along the semi-circularsurface of latching arms 504 of the duplex LC connectors 502. Thehorizontal and rearward path direction of the pins 522 causes thesemi-circular profile of the connector latching arms 504 to flexdownward. Because the pins 522 are not contained inside ramped groovesof the connector latching arms 504, the pull tab 514 can also be pusheddown at a location directly behind the LC connectors 502 rather thanpulling the tab in a rearward motion from a remote distance behind theconnectors, such as from the distal end 516. The action of pushing downthe connectors' integral levers or latching arms 504 unlatches theconnector 500. In some cases, the horizontal motion of the pull tab 514may not be desirable. Thus, the connector latching arms 504 may bepushed down without resulting in a horizontal motion of the pull tab514.

FIGS. 6A and 6B show top and side views, respectively, of the LCconnector 502 of the narrow pitch connector 500. FIG. 6A further showsthat the LC connector 502 has a width of 4.6 mm. FIG. 6B shows thesemi-circular profile of the latching arm 504.

FIG. 7 shows a partially disassembled view of the narrow pitch connector500 of FIG. 5. The top housing 510 is separated from the bottom housing508. The pull tab 514 is coupled to the top housing 510 and configuredto slide longitudinally along the length of the connector. The tophousing 510 also includes a restraint 524 configured to receive the pulltab 514.

FIG. 8 shows a further disassembled view of the narrow pitch connector500. Specifically, the pull tab 514 is shown to be separated from thetop housing 510, and the spring 520 is removed from the pull tab. Thepull tab 514 includes a longitudinal recess 526 configured to receivethe spring 520, and at least one restraint 528 configured to retain thespring. The top housing 510 also includes a recess 530 configured toaccommodate at least a portion of the pull tab 514, such as the spring520 and the proximal end 518. In various embodiments, the pull tab maybe removably coupled to the connector via the top housing.

FIG. 9 shows a perspective view of a prior art standard MPO SFP 900. TheSFP 900 is configured to receive a standard MPO connector and provides aport 902 for receiving an MPO connector having a conventional width, asshown for example in FIGS. 10A to 10C.

FIG. 10A shows a perspective view of a conventional MPO connector 1000.As shown in FIG. 10B, the conventional MPO connector 1000 has a width of12.4 mm. FIG. 10C shows a front view of the MPO connector 1000.

FIG. 11 shows an embodiment of a future narrow width multi-fiber SFP1100 according to aspects of the present disclosure. Various embodimentsdisclosed herein are configured for use with the narrow widthmulti-fiber SFP 1100, having a width less than that of conventional MPOconnectors, that is less than about 12.4 mm. The narrow widthmulti-fiber SFP has a port 1102 configured to receive a narrow widthmulti-fiber connector, such as a narrow width connector having an MTferrule (e.g., that shown in FIG. 12A).

FIG. 12A shows one embodiment of a narrow width connector 1200 accordingto aspects disclosed herein. The narrow width connector 1200 is amulti-fiber connector including a multi-fiber MT/MPO ferrule 1202. Theconnector 1200 includes two extending members or latching arms 1204. Inother embodiments, the connector may include at least one latching arm.The connector 1200 has a width of 9.6 mm, as shown in the top view ofthe connector 1200 in FIG. 12B. In other embodiments, the connectorwidth may be less than that of the width of conventional multi-fiberconnectors, for example less than the 12.4 mm of the conventional MPOconnector shown in FOG. 10B. In some embodiments, the width may be about9.6 mm or less.

The connector 1200 further includes a housing 1206 having a bottomhousing 1208 and a top housing 1210. The bottom housing 1208 includesside walls 1212. In various embodiments, the housing 1206 of theconnector 1200 may be a switchable housing. The side walls 1212 may beconfigured to open so as to facilitate opening of the housing 1206, forexample, to change polarity of the connector 1200. The side walls 1212may be raised towards the rear of the connector 1200. One advantage ofraising the side walls 1212 towards the rear of the connector 1200 iseasier access. The side walls 1212 may also be raised at anotherlocation.

The connector 1200 further includes a pull tab 1214 having a distal end1216 and a proximal end 1218. The pull tab 1214 further includes aspring 1220 configured to provide a force such that the connectorlatching arms 1204 return to the undisplaced position and thereby becomefully engaged inside the SFP's recess. The distal end 1216 of the pulltab 1214 may be pulled to remotely release the connector 1200 from anSFP or adapter. The proximal end 1218 of the pull tab 1214 is uniquelyshaped so as to engage with the unique profile of the latching arms 1204of the narrow width multi-fiber connector 1200. The proximal end 1218engages both latching arms 1204 of the multi-fiber connector 1200. Thatis, the proximal end 1218 includes a single prong configured to engagethe latching arms 1204. At the proximal end 1218 of the pull tab 1214there are outwardly pointing pins 1222 configured to rest directly aboveand slide along the semi-circular surface of latching arms 1204. Thehorizontal and rearward path direction of the pins 1222 causes thesemi-circular profile of the connector latching arms 1204 to flexdownward. Because the pins 1222 are not contained inside ramped groovesof the connector latching arms 1204, the pull tab 1214 can also bepushed down at a location directly behind the latching arms 1204 ratherthan pulling the tab in a rearward motion from a remote distance behindthe connector, such as from the distal end 1216. The action of pushingdown the connector's integral levers or latching arms 1204 unlatches theconnector 1200. In some cases, the horizontal motion of the pull tab1214 may not be desirable. Thus, the connector latching arms 1204 may bepushed down without resulting in a horizontal motion of the pull tab1214.

FIGS. 12B and 12C show top and front views, respectively, of the narrowwidth multi-fiber connector 1200. FIG. 12B further shows that theconnector 1200 has a width of 9.6 mm.

In various embodiments described above, the narrow width connectors havelatching arms configured to engage with a fixed or immovable recesswithin a narrow width SFP or a narrow width adapter. In theseembodiments, the pull tab of the connector displaces the flexiblelatching arm of the connector so as to disengage the latching arm fromthe recess of the SFP or the adapter. For example, the latching armsbend down as the pull tab is pulled back, so as to disengage theconnector from the SFP or the adapter.

In other embodiments, as further described for example in relation withFIGS. 13A, 13B, 14A, 15A and 15B below, the remote latch release pulltab may be configured to couple with a latch or a hook within theadapter or the SFP. In these embodiments, the flexible latching arm ofthe connector is moved into the main cavity or port of the SFP or theadapter, and the latch of the SFP or the adapter engages a recess of theconnector when the pull tab is in a normal location that is pushedforward by a spring. The pull tab may be configured to have a ramp areasuch that when the pull tab is pulled back, the latch of the SFP or theadapter is lifted by the retracted pull tab, thereby disengaging thelatch of the SFP or the adapter from the connector. Attempting to pullon the connector 1300 body, not the pull tab, the SFP latch retains theconnector within the adapter as shown in FIG. 14A.

FIG. 13A shows a narrow pitch multi-fiber connector 1300 inserted into anarrow pitch SFP 1302 such that a recess of the connector engages an SFPlatch 1402 FIG. 13B shows the narrow pitch connector 1300 inserted intoa narrow pitch adapter 1304 such that a recess of the connector engagesa latch 1402 of the adapter.

FIG. 14A shows a side view of the narrow width connector 1300 of FIG.13A coupled to the narrow width SFP 1302. Details of the coupling areshown in the zoomed view of FIG. 15B within the circle 1500.Specifically, the SFP 1302 includes an SFP latch 1402. The connector1300 includes a recess 1404. For example, the connector housing, on aside, may comprise a recess 1404. The pull tab 1406 may be spring-loadedas described in relation to various embodiments. This allows the pulltab 1406 to return to a position that will allow the SFP latch 1402 toengage with the connector recess 1404. When the pull tab 1406 is in thenormal pull tab location, that is pushed forward by a spring, as shownin FIG. 14A, the SFP latch 1402 is engaged with the connector recess1404.

FIG. 15A shows a side view of the narrow width connector 1300 of FIG.13A as it is disengaged from the narrow width SFP 1302. Details of thedecoupling are shown in the zoomed view FIG. 15B within the circle 1500.The pull tab 1406 includes a taper or a ramp area 1502. As the pull tab1406 is pulled back in the direction of the arrow 1504 as shown, the SFPlatch 1402 is lifted by the ramp area 1502 of the retracted pull tab,thereby disengaging the SFP latch 1402 from the connector as illustratedwithin the circle 1500. The same effect described herein in conjunctionwith FIG. 15A also occurs in other embodiments of connectors coupled toa narrow width adapter as shown, for example, in FIG. 13A.

Although FIGS. 14A and 15A illustrate coupling of the connector to anarrow width SFP, in other embodiments the connector may be coupled to anarrow width adapter having an adapter latch, similar to that of the SFPlatch. Further, although the embodiments shown in FIGS. 13A, 13B, 14,and 15 include a narrow width multi-fiber connector, other embodimentsherein may include narrow pitch LC connectors.

As described above, the embodiments of FIGS. 14A and 15A show animprovement over the prior art adapters (FIG. 1) and connectors (FIG.2). The improvement is the latch 1402 and recess 1404 area for the latchwhen the connector is fully inserted into the adapter or transceiverport. Unless the pull tab 1406 is retracted 1504, the latch 1404 willhold the connector within the port 1302, 1304, 1400 (as shown in FIGS.13 and 14) up to an acceptable pull force. Further embodiments in thepresent invention improve on the pull strength, stability of theconnector while in the port, and connector alignment upon insertion intoa port with the improvements in the port interface and connector releasemechanism.

Briefly referring to FIGS. 49A.1-49B, connectors can be bundled orclustered together with cabling of varying lengths among the connectors.Cables become entangled, and can be pulled on by trained users. Thispull force loosens the connector within the port. The connector maybecome dislodged if the pull force is greater than the latching force,or at the very least the interface between the connector fiber opticpath and the optical-electrical interface can get misaligned resultingin signal loss. Connectors are also placed in a panel via an adaptersimilar to FIGS. 40A and 40B, where two connectors are interfaced orpatched. The patching occurs when a first connector is inserted into afirst port and a second connector is inserted into a second port. Notunlike inserting into a transceiver, aligning the fiber optic path alongthe x-y axis between the opposite facing connectors is directly relatedto the quality of the signal path.

So determining the defective connector interface in a room of thousandsof connectors can be time consuming and typically goes undetected. Alsowith the decrease in connector size, access to release a connector isbecoming problematic for the user. Furthermore, connectors may be usedbehind the wall or behind the panel (e.g. the connector is not directlyaccessible by the user) as opposed front patch connectors. For anexample of the different connector types compare FIGS. 56A-C and 57A-CDue to structural differences between the front and BTW type, therelease mechanisms are different. But the port interface is the same.The present invention helps improve connection stability, connector toconnector alignment, and ease of release.

FIGS. 16A-22B are various views and details illustrate a connector, aSFP transceiver and the latching mechanisms associated therewithaccording to various aspects of a first embodiment of the invention.Referring to FIGS. 16A and 16B, the connector 1600 is a front patch typeconnector with a removable push/pull tab 1601. The proximal end 1640 ofthe connector 1600 is at the plug frame 1609 end, and the distal end1650 of the connector 1600 is at the boot 1602 end. The recess 1614accepts the latch 1402, while the spring 1610 urges forward the tab1601. The boot 1602 is a ruggedized round cable typically found on thefront type connectors used in patch panels or inserted into transceiverports. The push-pull tab is anchored to the connector body by side tabs1613 that press-fit against the connector 1600 back body 1604.

Referring to FIGS. 17A-17E.1, the connector 1600 is dimensioned to showthe reduced size of the plug frame 1609 for a narrow pitched connector.Referring to FIG. 17A the ferrule pitch or distance between the ferrulesis approximately 3.80 mm, while the overall outer dimension is 7.85 mmwide and 8.18 mm height. These dimensions are required by industrystandard of all connector manufacturers. As the connector size decreasesthe available outer area to secure the connector within the port alsodecreases. Although port and connector size decrease, performance interms of limited signal loss, pull strength and connector/port stabilityis not lowered.

For the present invention a port is an opening that receives theproximal end of a connector or interface device such as a computer card,and the port contains structure therein to secure and stabilize theconnector, and to further ensure alignment of the opposing fiber opticsignal paths. An adapter includes one or more ports (for example asshown in FIGS. 40A-40F.1 or FIGS. 60A-60H), for a patch panel or atransceiver as shown in FIGS. 18A-C, may have one or more ports.

Referring to FIG. 17D-17E, the operation of the push/pull tab is shown.In FIG. 17D, the tab 1601 is at its normal proximal position urgedforward by the spring 1610. This positions the latch release 1712 (asshown in FIG. 17D.1) in a proximal position relative the recess 1710.The ramp 1720 aids in lifting the latch as described herein. In FIG.17E, the user pulls on the tab 1601 in the direction of the arrow, andthe latch release 1712 (as shown in FIG. 17E.1) moves forward to engagethe latch 1402 (not shown) and lifts the latch out of the recess 1710,which releases the connector from the port interface.

Referring to FIGS. 18A-C, a transceiver 1800 is shown with flexinglatches 1820 inserted at the proximal end 1810 of a duplex transceiver1800. The flexing latches 1820 is the interface structure within theport that secures the connector 1700 (not shown) therein. FIG. 18C showsthe flexing latch 1820 at cross-section A-A of FIG. 18B. FIG. 18B afront view of the latches 1820 looking into the proximal end of thetransceiver 1800.

Referring to FIG. 19, the connector 1700 is inserted into the port ofthe duplex transceiver 1900. FIG. 20A shows the flexing latch 1820positioned in the connector recess 1710, at cross-section B-B of FIG.20B. FIG. 20B is a front view of the SFP holding the connector of FIG.20A. FIG. 20A is not unlike FIG. 14A as both show the connector securedwithin the port using the latch 1820. The pull tab is biased forward bythe spring when the latch is in the recess.

FIGS. 21, 22A and 22B show the connector being removed from thetransceiver 1900 in the direction of the arrow of FIG. 21. Referring toFIG. 22A, the ramp 2220 on the push/pull tab (refer to FIGS. 17A-17E.1)lifts the flexing latch 2210 to unlatch the connector 1700 from withinthe port. FIG. 22A is the cross-section B-B of FIG. 22B. FIG. 22B is afront view of the SFP and connector of FIG. 22A.

FIGS. 23-24B show the operation of the connector 1700 using an adaptertypically deployed in patch cabling systems having a similar latchmechanism to FIGS. 14A-B and similar operation as the transceiver inFIGS. 19-22B. FIGS. illustrates the connector 1700 inserted into theport of adapter 2300. The latch 1820 resides in the connector recess1710, as shown in FIG. 24A. FIG. 24B is the front view of the connectorinserted into the adapter as shown in FIG. 24A. FIGS. 25-26B, illustratethe same operation described in FIGS. 21-22B to release the connector1700 from the port of the adapter in this case. The adapter port mayalso contain the flexible latch 1820 as does the transceiver port ofFIG. 20A. FIG. 26B is a front view of the connector and adapter of FIG.26A.

Referring to FIGS. 27A-D, the adapter 2300 of FIG. 23 may have theflexible latch 2780 inserted into each port of the adapter 2700 as shownin FIG. 27B. FIG. 27C is the A-A cross-section of FIG. 27D, which is afront view of the assembled adapter. FIG. 27C shows the flexible latches2780 engaged the support rails as shown and press fitted 2790 into theadapter body to secure the latches from being displaced upon insertionand removal of the connector. The flexible latches 2780 slide into andsnap into place during assembly of the adapter 2300. A similar pressfitting structure may be used in the transceiver port. The press fitstructure helps retain the flexible latches in the port when the outerdimension of the flexible latch 2780 is slightly larger than the innerport, so upon insertion of the latch 2780, the friction between thelatch and port support rails retain the latch 2780.

The embodiment disclosed in FIGS. 14A-27D suffers from a number ofdrawbacks that the additional embodiments discloser herein overcome. Thelatch 1402, 1820 and recess 1710 has a limited pull force that exceededcan result in removing the connector from the port. Also at theconnector, the front portion 1614 may dislodge from an opening 1675under stress at the connector or its cabling, and the connector frontportion 1614 will become wedge or stuck in the port. Also the latchrecess 1712 does not fully secure the latch 1820 therein, and stress onthe connector body or its cabling can dislodge the latch wherein theconnector becomes loose in the port, which is not visually detectable.This leads to signal loss when the interconnection is broken. Also thelatch and recess have movement that can result in misalignment of theopposing fiber optic signal paths. As shown in FIG. 17E and FIG. 18C,the hook on the flexing latch can slide widthwise in the recess 1614 ofthe connector 1600. Also, the flexible latch is press fitted into theport which under sufficient pull force may be dislodged or misalignedwhich can prevent a connector from being inserted into the port.Furthermore, as connectors and ports decrease in overall size (e.g.outer, inner and length dimensions), the amount of exposed structuredecreases to secure and align connectors. Since connectors are madeprimarily from plastic for cost reasons, and plastic fails morefrequently than metal, and because testing is standardized, moreinnovated designs are needed to maintain the same performance as metal,as plastic components are smaller and have less structural integrity.

FIGS. 23-27D illustrated various views and details that show a narrowpitch multi-fiber connector both engaged and disengaged from an adapterport. The connector and the adapter include latching mechanisms aredesigned and arranged to be latched and unlatched, for example, with theuse of a push/pull tab that is positioned on the connector body.

As discussed herein, structural improvements are needed to reduceconnector and adapter (transceiver size also) and to incorporate newrelease mechanisms and boot designs to meet the varied industryenvironments. Referring now to FIG. 28A, an embodiment of an improvedthe narrow pitched connector or CS connector is shown exploded fordetail. It should be noted that this visual example is for explanatorypurposes, and that various alternative examples may exist, some of whichare discussed herein. In some embodiments, a CS connector may be aminiature single-position plug generally characterized by dualcylindrical, spring-loaded butting ferrule(s) of approximately 1.25 mmin diameter, and a push-pull coupling mechanism.

In some embodiments, the CS connector may comprise a front body (i.e.,plug frame) 2801, which houses the ferrule(s) and ferrules flange(s)2802. A rear body (i.e., back post) 2804 may connect to the rear of thefront body 2801 and contain the ferrule-flange(s) 2802. Theferrule-flange(s) 2802 may be held in place using one or more springs2803. The rear body 2804, as shown, may include a crimp ring 2805attached to the rear of the rear body. In some embodiments, a cable boot2806 may surround the crimp ring 2805. In some embodiments, and asshown, a dust cap 2807 may be placed over the front body 2801 in orderto protect the ferrules housed in the front body from damage and/ordebris.

In additional embodiments, a push-pull tab 2810 may be attach to the CSconnector, as discussed in more detail herein. The push-pull tab 2810may have a side portion 2812 and a center protrusion (i.e., 2813 b),which serves to anchor the pull-tab and other functions discussedfurther herein. The push-pull tab 2810 may utilize a tab spring 2808 toapply a constant directional force on the push-pull tab to allow forvarious benefits which are discussed herein. The pull-pull tab 2810 mayhave a widthwise recess 2817 and a multi-sloped ramp area 2820 thatengages an anchoring device to help ensure repeatable release andconnect of a connector within a port.

Referring briefly to FIG. 28B, one embodiment of an assembled CSconnector with a push-pull tab is shown. In some embodiments, and asshown, the push-pull tab 2810 has a front portion 2814 which resides ina lengthwise groove 2875 within the front body 2801. Thus, when thepush-pull tab 2810 traverses the connector, as discussed in detailherein, the front portion 2814 moves independently of the front body2801. The side portion 2812 is one anchor point for the push-pull tab2810 to the connector 2800C. The anchor point 2813 d is an extended tabextending from the side portion 2812 beneath the rear body 2804.

FIG. 28C is a perspective view of the low profile, compact connectorwith a standard push-pull tab release having a ruggedized round cable.In some embodiments, the compact connector 2800C may comprise a dust cap2840C, one or more ferrules 2850C, a connector housing 2810C, apush-pull tab 2820C, one or more ears 2825C, and a ruggedized roundcable 2830C. The ears 2825C extend under the rear body and act as ananchor point 2813 d, as shown in FIG. 28E. The ears help preventinadvertent removal of the push-pull tab by popping off during use, andthe ears further help guide the push-pull tab along the connectorhousing.

Referring to FIG. 28D, the push-pull tab 2823 is improvement over thepush/pull tab 1604. The push-pull tab 2823 has three additional anchorpoints 2813 a, 2813 b, and 2813 c. The anchor point 2813 a has aprotrusion 2813 a or tongue that extends perpendicular into the groove2875, and provides stability to the proximal end of the push-pull tabthat showed a tendency to jump out of the groove 2875 at the frontportion 2814 when the force on the push-pull tab at the distal end wasexcessive. The front portion engagement surface 2815 engages the portinner surfaces to help align the connector therein. The anchor point2813 b is shown in FIGS. 32B, 32C and 33B. The second anchor point 2813c is show in FIGS. 32B, 32C and 33C. The increase number of anchorpoints helps ensure the pull-push tab 2823 front portion 2814 does notbecome dislodged from the groove 2875 in the connector body 2801. If thepush-pull tab 2823 becomes dislodge there is no way to remove theconnector from the port without damaging the transceiver or adapter, anddestroying the connector.

Referring again to FIG. 28D, FIG. 28D shows an exploded view of acompact connector for more detail. In some embodiments, such as thoseshown in FIGS. 28A-E, the compact connector may have a push-pull tab2823, which may have one or more back body latch openings and engagementsurfaces 2822D, a latch adapter recess 2817, and a knob 2828D. Asdiscussed herein, the connector may have a return spring to return thepush-pull tab to its original location. The main connector body 2870Dmay also comprise a dust cap 2874D, a plug frame adapter engagementsurface 2814, and one or more hooking surfaces (i.e. recesses) 2817 Someembodiments may also have ferrules 2850D, ferrule flanges 2855D,compressing springs 2858D, a back body housing 2860D, a crimp ring2835D, and a cable boot 2830D. In some embodiments, the back bodyhousing 2860D may also have a front body latch 2867D and a back bodylatch 2865D.

Referring to FIG. 28E, this figure shows a recess 2880 that runslengthwise within the connector front body 2870D, at its underside. Thisrecess 2880 engages a corresponding rail guide 5835 (FIG. 58B) that ispart of the inner structure of the receiver device port 6020. Thecutouts 2885 on either side underneath the connector front body 2870Dengage and accept the guide rails 5835. The protrusions 2890 helpstabilize the connector outer housing in the receiving device port. Areceiver device may be an adapter 6000 or transceiver 1900.

In one or more embodiments, and as shown in FIG. 29A, a CS connector mayhave an overall dimensional width of 7.95 millimeters. Additionally, infurther embodiments, the CS connector may have a pitch of 3.8 mm. Asdiscussed herein, the pitch is defined as the axis-to-axis distancebetween the central axes of the CS connectors 2950. Moreover, as shownin FIG. 29B, an embodiment may have an overall dimensional height of10.46 mm when the push-pull tab 2910 is attached to the front body 2901and the rear body 2904. The connector recess 2917 accepts the latch (notshown) when inserted into a port. The ramp area 2920 and front portion2914 aid in the release of the connector from a port.

As disclosed herein, a connector (e.g., a CS connector) may have apush-pull tab to allow for easy insertion and extraction from an adapterport. Referring now to FIGS. 30A and 30B, in some embodiments, thepush-pull tab 3010 may slide forward and rearward in a lengthwise mannerin a groove in relation to the connector as indicated by the dasheddouble-sided arrow 3011. FIG. 30A shows an embodiment in which the sideportion 3012 of the push-pull tab 3010 contacts the rear body 3004. Thiscontact between the side portion 3012 and the rear body 3004 stops theforward movement of the push-pull tab 3010. The positions the frontportion 3014 of the push-pull tab 3010 at its proximal end, with thespring biased forward (not shown) is in in a relaxed state. In thisposition, the connector 3000 can be inserted into a port, and the recess3017 will lock with the corresponding internal port structure (notshown) to secure the connector in the adapter or transceiver. FIG. 30Bshows the push-pull tab 3010 being pull rearward 3011 indicated by thedistance 3013. This moves the front portion 3014 rearward, along withthe front portion ramp area 3020, to engage the adapter latch or hook(not shown) to release the connector from the port.

In a further embodiment, the push-pull tab 3010 may be moved away fromthe rear body by a distance 3013 of about 1 mm to about 3 mm. Thepush-pull tab 3010 may have a center protrusion (such as 2813 b in FIG.28A) which makes contact with the rear body 3004. This contact betweenthe center protrusion or front portion 3014 and the rear body 3004 maystop the rearward movement of the push-pull tab 3010.

Referring to FIGS. 31A-C.1, a CS connector according to some embodimentsis shown. As discussed herein, the push-pull tab has a front portion3114. In some embodiments, the front portion 3114 may comprise a tip3130. The tip 3130 may comprise a slit or groove (not shown) which mayslide over a portion of the front body 3101 in order to securely fastenthe front portion 3114 to the front body 3101. The tip 3130 correspondsto the anchor point 2813 a. The slit or groove may, in some embodiments,be large enough to accommodate the movement of the push-pull tab asdiscussed herein. Stated differently, when the push-pull tab is pulledaway from the front body (see FIG. 30B and corresponding description)the push-pull tab may slide along the front body (i.e., FIG. 31C), thusthe slit or groove (e.g., FIG. 28A, 2875) must be large enough to allowfor the movement of the push-pull tab while also ensuring a secureattachment in the non-retracted state (i.e., FIG. 31B). FIG. 31B showsthe recess 3117 to receive the corresponding port structure to securethe connector upon insertion therein. The ramp area 3120 is involved inlifting the latch (not shown) to release the connector from the port,and described herein.

As shown in FIG. 32A, and discussed herein, an embodiment may comprise aspring 3208 (i.e., FIG. 28A, 2808). The spring 3208 applies a biasingforce to the push-pull tab 3210 in the forward direction such that thegroove of the front body 3201 and the groove of the push-pull tab 3210align as discussed herein, and shown in FIGS. 47A-C. As shown in FIG.32A, the hidden lines show the spring 3208 within the push-pull tab3210. In additional embodiments, the push-pull tab 3210 may comprise awedge portion 3231. The wedge portion 3231 is configured such that itcan snap into the front body 3201 and slide/traverse the groove (seeFIG. 28A at 2875) when the push-pull tab is moved along the housing(i.e., front body and rear body). This wedge portion 3231 is the secondanchor point 2813 b. Anchor point 2813 b or wedge 3231 is detailed atcross-section X-X of FIG. 33B. As shown in FIG. 32B, the main connectorbody 2870D (i.e. the front body 2801) has a clip 3233 which is the thirdanchor point 2813 c. The clip anchors the push-pull 3010 housing to themain connector body 2870D, as shown in FIG. 32C. The clip is detailed atcross-section Y-Y of FIG. 33C.

Referring now to FIGS. 33A-C.1, a CS connector is shown includingcross-sections of various embodiments. FIG. 33A illustrates an exampleCS connector (shown at FIGS. 28, 29 and 30) according to someembodiments with two separate cross-sectional areas identified. Thefirst cross-sectional area (i.e., X-X) is further detailed in FIG.33B.1. FIG. 33B.1 shows how the wedge portion 3331 snaps into, orconnects, with the front body 3301. It should be understood, that thedesign of the wedge portion 3331 ensures a secure connection to thefront body 3301 while also allowing for the push-pull tab 3310 to movealong the length of the front body 3301 in the groove as discussedherein. In additional to the wedge portion 3331, some embodiments mayalso have a further securing connection device comprising one or moreclips 3332, as shown at FIG. 33C, which are formed as part of thepush-pull tab. In some embodiments, and as shown, the one or more clips3332 connect to and snap into the front body 3301 (as shown in FIG.33C.1), and positioned adjacent to the rear body 3304 which is insertedinto the front body. It should be understood that these are non-limitingexamples, and that various connection means may be used to secure thepush-pull tab 3310 to the housing. Specifically, the wedge portion 3331and the one or more clips 3332 (as shown in FIG. 33C and detailedfurther at FIG. 33C.1) may be located at various other locations on thepush-pull tab 3310, as well as different location on the front body 3301and the rear body 3304. It should be understood, that various portionsof a connector system (e.g., CS connector system) may have adjustmentsmade to accommodate various situations. One non-limiting example ofthese variations is shown in FIG. 34, which shows the push-pull tab 3410being constructed with varying lengths as shown in FIG. 34.1, FIG. 34.2and FIG. 34.3 with increasing length.

The connectors (e.g., CS connectors of FIGS. 28-30 and 34) disclosedherein may be inserted into an adapter and/or transceiver port (e.g., afiber optic port), such as for example in a fiber array or server. Anon-limiting illustrative example of a typical adapter is shown in FIG.35A. FIG. 35A illustrates a dual port adapter for accepting twoconnectors (e.g., a dual ferrule CS connector). It should be understood,that the various dimensions provided herein are only for illustrativepurposes, and that various other dimensions may be possible in variousimplementations. FIGS. 35B and 35C show specific cross-sectional cuts ofthe adapter shown in FIG. 35A. The various dimensions of FIGS. 35A, 35B,and 35C are listed below in Table 1. As shown in FIGS. 36A-C, 37A-C, and38A-C, and discussed herein, the receiver/transceiver port may allow forthe insertion of an anchor device.

TABLE 1 Dimensions (mm) Reference Minimum Maximum F1 6.5 6.7 F2 6.5 6.7G1 3.8 G2 3.8 GA1 1.90 GA2 1.90 H1 ^(a,b) 2.87 2.97 H2 ^(a,b) 2.87 2.97I1 3.7 3.8 I2 3.7 3.8 J1 5.75 5.85 J2 5.75 5.85 K 6.79 6.89 L 1.03 1.13M 1.90 N 0.05 — P — 0.8 Q — 1.7 R^(a) — 1.25 S 0.55 0.75 T 4.0 4.1 U 0.3V 1.4 1.5 W 2.7 Y 0.4 0.5 Z 3.7 3.8 AA 1.44 1.54 AB 4.35 4.55 AC1 0.5AC2 0.5 AD 2.55 2.65 AF 9.24 9.38 AG 14.55 14.65 AI1 3.0 3.2 AI2 3.0 3.2AJ 7.9 8.1 AK1 1.43 1.53 AK2 1.43 1.53 AL 90 AM 2.24 AN 2.65 2.75 AO 00.2 AP 2.1 2.3 AQ1 4.0 AQ2 4.0 AR 15.38 AS 0.5 BA 8.22 8.62 BB 0.2 0.4BC 1.1 1.3 BD (0.75) BE 3.5 3.7 BF (1.2) BG 0.8 1.0 P′ 0.75 — Q′ — 1.15AD′ — 2.3 CA 7.29 7.39 CB 1.65 1.75 CC 0.3 — CD 2.3 — CE (2.2) CF (2.95)CG 2.6 2.8 CH 2.45 2.55 CI 1.95 2.05 F′ 6.25 6.35 CJ 1.75 1.85 CK 5.355.45 CL 0.67 0.77 CM 1.95 2.05

The embodiments shown in FIGS. 35A, 35B, and 35C illustrate an adaptercapable of receiving various modifications. The adapter port structureis universal, in that, it can receive non-limiting variations of theremoval modification device as shown in FIGS. 36A-C, 37A-C and 38A-C.The removal device is inserted into the slot AD1 and/or AD2 (FIG. 35A)of the adapter/transceiver port. The device 3920 is shown at FIG. 39inserted into each slot. This device is an improved flexible latch withadditional structure and novel shape that allows for more robustsecuring to the port inner structure, the latter having multiple contactpoints for mating with the front body 3201 outer housing of theconnector.

For example, and referring to FIGS. 36A, 36B, and 36C, in someembodiments, a removable adaptor modification (e.g., the hook system ofFIGS. 36B and 36C) may be inserted into the adaptor shown in FIG. 36A.The removable modification device 3644, such as that shown in FIGS. 36A,36B and 36C, may comprise one or more hook tips 3621, a hook engagementsurface 3626, the hook engagement surface may have a cutout as shown3626 a, a gap 3628, an adapter hook opening 3632, and a middle hook tip3622, or a plurality of either (e.g., as shown, the modification devicecomprises two hook tips). The adapter hook opening 3632 is where theconnector front portion 3114 resides when a connector is inserted intothe adapter port. Adapter rails 3635 are for guiding and aligning theconnector housing in the adapter port upon insertion of the connectorinto the adapter. The hook support 3660 holds the adapter hook 3644inside the adapter port. The adapter port structure including the railsand hook support can be used in the transceiver port without departingfrom the scope of this invention.

It should be understood, that the removable modification device (i.e.,interchangeable anchor device) may vary in style and design. FIGS. 37Band 37C provide an illustrative non-limiting example of a potentialdesign for the interchangeable anchor device. As discussed herein, insome embodiments, a removable adaptor modification (e.g., the hooksystem of FIGS. 37B and 37C) may be inserted into the adaptor port asshown in FIG. 37A. The removable modification device 3744, such as thatshown in FIGS. 37B and 37C, may comprise one or more hook tips 3721,hook engagement surfaces 3726, a hook engagement surface cutout 3726 a,and a middle hook tip 3722, or a plurality of either (e.g., as shown,the modification device comprises two hook tips). The hook engagementsurfaces mate with corresponding surfaces in the port to ensurestability and fit against connector movement upon impact or the likethat may lead to signal loss due to misaligning of the fiber opticsignal path between fiber optic ferrules.

In a further embodiment, and as shown in FIGS. 38A, 38B, and 38C, aremovable adaptor modification (e.g., the hook system of FIGS. 38B and38C) may be inserted into the adaptor shown in FIG. 38A. The removablemodification device 3844, such as that shown in FIGS. 38B and 38C, maycomprise a hook tip 3821, a hook engagement surface 3826, a hook radius3824, a gap 3828, an adapter hook opening 3832 and a middle hook tip3822, or a plurality of either (e.g., as shown, the modification devicecomprises two hook tips). This device is also called the reverse hooklatch. Without departing from the scope of the present invention, thehook engagement surface may have a cutout 3826 a. The cutout 3826 aseats behind a corresponding adapter cutout 6010 (FIG. 60A) to securethe hook 3844 in a port.

FIG. 39 illustrates a dual port adapter for accepting two connectors(e.g., a dual ferrule CS connector) similar to that shown in FIG. 35A,however, FIG. 39 includes two removable modification devices 3920. Itshould be understood, that the various dimensions provided herein areonly for illustrative purposes, and that various other dimensions may bepossible in various implementations. FIGS. 40A and 40B show specificcross-sectional cuts of the adapter shown in FIG. 39, and thus, theidentified dimensions of FIGS. 39, 40A and 40B are also listed inTable 1. FIG. 40A shows the modification device (e.g. anchor or hook3844) 4044 inserted in adapter. Located within the adapter housing is analignment sleeve holder 4040 that accepts a ferrule (1602, 1604) of FIG.16C. The hook tip 3821 is shown in FIG. 40A. Referring to FIG. 40B, themiddle hook tip 3822 a is shown in a first position (withoutcross-hatching) and no connector inserted, and in a second position(with cross-hatching) showing the middle hook tip 3822 b deflected uponinsertion of the connector. The deflecting is described in more detailbelow. Furthermore, FIG. 40C illustrates an example embodimentcomprising a push-pull configured adapter with one or more hooksinserted in an adapter port. The hook 4044 position is shown in astandard, transparent, and section cut view, at FIGS. 40C.1 and 40C.2respectively. Referring to the section cut view and transparent view ofadapter 4000, the hook engagement surface 3826 seats up against itscorresponding port hook engagement surface 4025C. This prevents the hookfrom being unintentional remove when excessive force is used to releasethe connector, if the connector body or its cabling is stressed.Moreover, the hook placement as shown helps prevent lateral movement ofthe hook in the adapter port. As compared with FIGS. 27A-D, the updatedhook designs over the flexible latch 1820 and the port structure (FIG.40C) over the rails only in FIG. 27A is an obvious improvement when theport inner wall structure is being used to secure the hook, over pressfitted securing.

Further illustration examples are also shown in FIGS. 40D-40F. As shownin FIG. 40D or FIG. 40D.1, a hook 4044 or FIG. 40AC at hook 4044, may beinserted horizontally into the adapter 4000 port along the hook support3660 located at the inner sides of the port. FIG. 40D illustrates a dualor duplex port adapter 4000, although the same adapter 4000 may have asingle port without departing from the scope of the invention. FIG. 40Dshows the hook 4044 just prior to insertion. FIG. 40E shows the hook4044 partially inserted into the port of the adapter 4000. FIG. 40Efurther shows how the hook changes when it is forced through the adapter(i.e., the hook must deform when passing through the latch slide featureunderneath the top region until it reaches its final secure location.This deforming imparts stress into the hook, which is released once thehook gets in behind the adapter to hook engagement surfaces or adaptercutouts (FIG. 60A, 6010). Finally, FIGS. 40F-F.1 show the hook when itis entirely installed, and the latch (3821, 3822 combined) feature isback to a normal or standard shape. The hook engagement surfaces 3826are in contact with the adapter hook engagement surfaces 4025D as showncomparing FIG. 40D.1 with FIGS. 40E and 40E.1.

Referring now to FIGS. 41A and 41B, illustrative examples of a CSconnector 2800C (e.g. LC Type connector which is low profile andcompact) being inserted into a single port adapter 4110A as shown, witha hook 4144 (e.g. 3644, 3744, 3844) embedded in the adapter port. Asdiscussed herein, the adapter shown in FIG. 41B comprises themodification device (or hook), which engages with portions of the CSconnector 2800C as discussed below in detail.

FIGS. 42A.1-42A4.1 shows a CS connector 2800C being inserted into anadapter (4000, 4110A). The modification device 4244 engages andinteracts with the CS connector as the connector is inserted into theadapter housing. In some embodiments, as the CS connector is inserted,the front of the CS connector contacts hook ramp (FIGS. 37B and 37C at3722, and FIGS. 38B and 38C at 3822) which lifts the portion of themodification device that is interacting with the CS connector. Referringto FIGS. 42A.1-42A4.1, the hook 4244 is located in the adapter housing4000, and the connector 2800C is positioned outside the adapter portjust prior to insertion into the adapter 4000, and the second drawingconnector 2800C is partially inserted into the adapter port 4000 a, andin the final drawing connector 2800C is fully inserted into the port ofadapter 4000 b. Upon full insertion, cutout 4231 shows the front portionramp 3020 lifting the middle hook tip 3822 sometimes called hook ramps,and when the connector front portion 2814 passes beyond the middle hooktip 3822, the front portion resides in a hook opening 3832.

Still referring to FIGS. 42A.1-42A4.1, the movement of the modificationdevice is shown in zoomed-in detail views 4231 and 4232. As shown, thehidden (e.g., dashed) line represents the profile hook ramp or ramps3622, 3722, and 3822, and the solid lines represent the profile of thehook tips 3621, 3721, and 3821. The hooks 3621, 3721, and 3821 riseabove the surface of the connector allowing for insertion of theconnector into the adapter. Once the connector reaches the predetermineddestination within the adapter (e.g., when a secure fiber connection ismade), the hook tips 3621, 3721, and 3821 interlock with a recess 4217on the connector. This interlocking action secures the connector withinthe adapter housing by using tab 4215 during push-in action.

Additional detail related to the adapter features is shown in FIGS.42B.1-42B.6. The first stop in the connection of the adapter 4210B andthe connector 4215B is to insert the connector into the adapter as shownin the top two images of FIGS. 42B.1-42B.2. The inserted connector frontportion compresses the hooks 4244, as shown in the second two ofillustrations, FIGS. 42B.3-42B.4. Finally, the last two of illustrationsshow the connector 4215B is securely fastened in the adapter via thehook 4244B, as shown in FIGS. 42B.5 and 42B.6. The illustration 4250B isthe top proximal end of the connector fully inserted into the adapterhousing, and the hook has latched into the recess 4217 on the top partof the connector. The second illustration 4245B shows the insertion fromthe bottom of the connector at its proximal end. The guiding rail 4235Bof the adapter housing engages a track or recess 4230B located on thebottom side of the proximal end of the connector. The guiding rail 4235Bcan be considered a key that locates and aligns the connector upon andduring insertion into the adapter, and further ensures no lateralmovement of the connector while latched into the adapter housing.Movement can occur from incidental bumping of the connector, orvibration over time from the equipment can cause unwanted movement. Ifthe connector is disrupted while in the adapter, the ferrules canmisalign reducing signal strength. The final connection with hook 3844is again shown in FIG. 42C-42C.3 which shows the connector 2800Cinserted into the adapter 4200C and the hook tip 3821, 3822 interlockingwith the widthwise recess 4217 as discussed herein. The outer hook tips3821 become seated in the recess upon full insertion of the connectorfront portion 2814 in the port. The front portion 2814 resides in thehook opening 3828.

FIGS. 42D-42D.5 shows an embodiment wherein a specific adapter housing4210B (i.e., pull release type as defined by a hook placed in a port ofthe adapter) is utilized. As discussed at length herein to release theconnector 2800C from the adapter or transceiver port, a user is pulling(in the direction of the arrow) on the push-pull tab moved the tab alongthe length of the connector 2800C and continually lifts the hookmechanism, as shown in illustrations 4210D, 4215D, 4220D and 4225D, thenat full extension of the push-pull tab, the connector is easily removedfrom the adapter port. As shown prior to pulling the push-pull tab 2820Cthe outer hook tip 3822 resides in the recess 2817. An improvement overthe push/pull tab of FIG. 16A is the hook tips 3821, 3822 will catch andhold on the inner slope 2817 a of the recess as shown in 4210D, at hooktip 3821, when a stress, such as an inadvertent pull is made on thecable or boot and not the pull/push tab 2820C.

Still referring to FIGS. 42D-42D.5, pulling at the tab 2820C, the frontportion (2814, 3014) lifts the middle hook tip 3822, as shown as 4215D.Further pulling the pull knob rearward, the middle hook tip 3822 liftsout of the recess 2817, and continued rearward pulling lifts outer hooktips 3821, as the outer hook tips 3821 are connected to the middle hook3822 as shown in FIGS. 38A-C.

Still referring to FIGS. 42D-42D.5, the hooks (3644, 3744, 3844) can beused inside the port of a transceiver (FIG. 1A) without departing fromthe scope of the invention. The inside structure of the transceiver port(FIG. 1A) is similar to FIGS. 35 and 39, as shown to accept and engage aconnector 2800C. The inside of an adapter port is a transceiver at afirst end without departing from the scope of the invention. The secondend of the transceiver is connected to a computer interface card.

Referring to FIGS. 42E.1-42E.2, the connector of FIG. 33A is fullyinserted into the adapter port of FIG. 60A. The hook tip 3821 is restingin the connector recess 3317. The hook engagement surface 3826 is fixedagainst the adapter to hook engagement surfaces or adapter cutouts 6010.This secures the hook 3844 firmly in the port of the adapter 6000. FIG.42E.2 shows a cross-section of the FIG. 42E.1 that illustrates theposition of the middle hook tip 3822 resting in the recess 3317.

Referring to FIGS. 42F.1 thru 42F.3 show the release of the hook tips ofhook 3844 from the connector recess 3317, when the user pulls on thepush-pull tab 3310 in the arrow direction 4250E. At FIG. 42F.1, themiddle hook tip 3822 is lifted up out of the recess, as described inFIGS. 42D-42D.5, in the direction of the arrow 4252F. Continued pullingin the direction of the arrow 4250F on the push-pull tab 3310, the outerhook tips 3821 are lifted up out of the recess (as described in FIGS.42D-42D.5), in the direction of the arrow 4252F. Continued pullingeventually the hook tips (3821, 3822) are lifted out of the recess4216F, and the connector is removable from the port. As the middle hooktip is lifted, the outer hook tips are lifted, as the hook tips areconnected as shown in FIG. 38B.

Referring now to FIGS. 43-43A, it is important to note that the frontportion 4314 a of the push-pull tab 4310 moves independently of thefront body 4301, as discussed herein. This movement allows the releaseof the connector from the hook located inside the adapter housing at theport. Accordingly, the front portion 4314 a of the push-pull tab 4310,which is shown in detail, may align with the recesses 4317 of the frontbody 4301. In this configuration, the hook tips 3621, 3721, and 3821 areable to securely fasten the connector to the adapter. However, dependingon the embodiment, the push-pull tab 4310 may be moved in the forward orrearward direction thus knocking out the latch 1820 from the recess1710. When the front portion 4314 a of the push-pull tab 4310 is movedout of alignment, it interacts with the hook ramp 3622, 3722, and 3822via the ramp 4314 b. The differing slope along the ramp area 4314 bhelps reduce lateral movement of the middle hook tip 3822, which in turnreduces lateral movement of the outer hook tips 3821 within thewidthwise recess 4316, as the middle hook tip and outer hook tips areone structure. Accordingly, in some embodiments, moving rearward thepush-pull tab 3810 independently of the front body 4301 may allow theramp area 4314 b to apply a force to the hook ramp 3622, 3722, and 3822,thereby raising the hook tips 3621, 3721, and 3821. Once the hook tips3621, 3721, and 3821 are raised, the connector can be safely removedfrom the adapter and/or transceiver. This is also shown in FIGS.42D-42D.5.

FIGS. 44-46 show further detail and cross-sectional illustrations of aconnector interacting with an adapter and/or transceiver. Additionally,FIGS. 47 and 48 show further detail and possible dimensions of anembodiment, see Table 2.

TABLE 2 Dimensions (mm) Reference Minimum Maximum BA′ ^(a) 8.7 8.9 DA8.28 8.48 DB 7.45 7.6 DC 5.2 5.4 DD 5.5 5.7 DE 5.5 5.7 AG′ 13.75 14.05AM′ 2.08 2.18 AN′ 2.08 2.18 AC′ 1 ^(b) — 0.5 AC′ 2 ^(b) — 0.5 Z′ ^(b)3.32 3.72 AR′ ^(c) 6.88 7.28 DF ^(c) — 0.5 G′ 3.8 DG 6.86 7.06 J′ 5.55.7 DI 7.75 7.95 DJ (0.81) DK (3.57) DL (1.3) DM ^(d) 1.45 — DN (6.24)AA′ 1.4 1.6 AB′ 9.33 9.53 DO (2.92) DP (3.22) DQ ^(a) 5.14 5.26 T′ 3.33.4 H′ 3.0 3.2 AF′ 1 (2.80) AF′ 2 (2.80) AK′ 1.78 1.94 DR — 0.5 DS 1.601.72

Referring to FIG. 44A, the push-pull tab 2820D ramp areas or surfaces(4410A, 4415A) engage and lift the middle hook tip 3822 (in thisembodiment), to allow the hook tips 3821 to fall into the recess 4417,and the connector (2800C, FIG. 43) is retained in the adapter uponinsertion of the connector into adapter port. Referring to FIG. 44B, theplastic hook tip 3822 is in the connector body recess. The dimensionaldesign of the hook (FIGS. 40A-40B), the adapter port (FIG. 39) and theconnector 2800C front portion ensure the ferrule assembly 2850 engagesand mates within alignment sleeve 4430B, to be opposite a ferrule from aconnector inserted at an opposing port on the second side of the adapteras shown in FIG. 63A. This establishes a communication or signal pathfrom a first connector to a second connector as illustrated in FIG. 63B.

Referring to FIGS. 45A-C, the section views C-C and D-D illustrate theconnector 2800C push-pull tab 2820D engaged with the hook 3744 at rampareas 4410 a and 4415A. As discussed in FIGS. 44A-44B, as the connectoris inserted the ramp areas deform the hook tip 3722, to allow theconnector to be inserted, and then the hook relaxes with its hook tips3721 resting in the recess 4317.

Referring to FIGS. 46A-46D, section views FIG. 46B and FIG. 46Eillustrate inserting the connector 2800C or connector 5000 (not shown)into the adapter port. The connector push-pull tab 2820C ramp areas4415A is configured to engage the middle hook tip 3622 of hook 3644,lifting and deforming the hook tips 3621, and when the ramp areas passby the hook tip 3622, the hook tips 3621 rest in the recess 4317 asshown in FIG. 46E. As described in FIGS. 44A, 44B, 45A-C and 46A-46D,connector front portion and its ramp area is independent of hook type(3644, 3744, 3844).

Referring to FIGS. 47A-C, the proximal end 4700 of the connectors (2800,5000, 5100, 5200C, 5310A-5310D, 5400A, or 5800D) is illustrated. Thedimensions Y, R, Q, etc. are found in Table 1. The ferrules are 4702 a4702 b. The recess 4717 accepts the hook tips (3621, 3721 or 3821). Theramp areas (4410 a, 4415 a) lift and deform the hook upon insertion andremove of the connector. The opening 4720 is the ramp profile containingthe ramp areas to add in connector alignment, release and unintentionalmisalignment as described herein.

Referring to FIGS. 48A-D, the proximal end 4800 of the connector of thepresent invention illustrates various dimensions found in Table 1. Theramp areas 4810 a, 4815 b along the pull tab profile engage and deformthe hook upon insertion and removal. The recess 4817 captures the hooktip 3621, 3721 3821 after the hook is deformed and relaxes when the rampareas are passed upon fully insertion of the proximal end of theconnector into an adapter port for a push-pull tab connector (2800C,etc.). FIG. 48C is a side section view of the proximal end 4800 showingvarious dimensions found in Table 1. FIG. 48B is looking into theproximal end 4800 showing various dimensions found in Table 1. FIG. 48Dis a side section view at the tip of the proximal end showing variousdimensions found in Table 1. FIG. 48A is a lower right front end view ofthe proximal end 4800 showing various dimensions found in Table 1.

The use of a CS connector allows for a compact fiber implementation, aswell as improved flexibility. For example, in some existing systems, asshown in FIGS. 49A.1-49A.2, a 200G transceiver module 4901 may receivean MPO connector 4902. The MPO connecter may then be split out using anadditional tool, such as a fan out 4903 or a cassette 4906. Once thecable is split out, it can be connected to a 100G module device (e.g., aLC uniboot as shown) 4904. The 100G module device 4904 may then beinserted into a 100G transceiver 4905.

Alternatively, in some embodiments, and as shown in FIG. 49B, aplurality of CS connectors 4906 are inserted into a 200G transceivermodule 4901. Each CS connector 4906 may then independently connect tothe 100 as shown in FIG. 49A, a 200G transceiver module 4901 may receivean MPO connector 4902. The MPO connecter may then be split out using anadditional tool, such as a fan out 4903 or a cassette 4906. Once thecable is split out, it can be connected to a 100G module device (e.g., aLC uniboot as shown) 4904. The 100G module device 4904 may then beinserted into a 100G transceiver module 4905.

As discussed herein, various types of connectors exist with variousmethods of implementation (e.g., those embodiments shown in FIGS.28-34). Referring now to FIG. 50A, an embodiment of a CS connector isshown exploded for detail. It should be noted that this visual exampleis for explanatory purposes, and that various alternative examples mayexist, some of which are discussed herein. In some embodiments, a CSconnector may be a miniature single-position plug generallycharacterized by dual cylindrical, spring-loaded butting ferrule(s) ofapproximately 1.25 mm in diameter, and a push-pull coupling mechanism.In some embodiments, the optical alignment mechanism of the connectorsis of a rigid hole or a resilient sleeve style.

Referring to FIG. 50A, in some embodiments, the CS connector 5000 maycomprise a front body (i.e., plug frame) 5001, which houses theferrule(s) and ferrules flange(s) 5002, at its proximal end 5100. A rearbody (i.e., back post) 5004 may connect to the rear of the front body5001 and contain the ferrule-flange(s) 5002. The ferrule-flange(s) 5002may be held in place using one or more springs 5003. The rear body 5004,as shown, may connect to a behind the wall (BTW) fiber boot 5018. Insome embodiments, and as shown, a dust cap 5007 may be placed over thefront body 5001 in order to protect the ferrules housed in the frontbody from damage and/or debris.

In additional embodiments, a push-pull tab 5010 may attach to the CSconnector, as discussed in more detail herein. The push-pull tab 5010may have a side portion 5012 and a center protrusion (i.e., 5014), whichserve various functions discussed further herein. The push-pull tab 5010may utilize a tab spring 5008 to apply a constant directional force onthe push-pull tab to allow for various benefits which are discussedherein. In some embodiments, and as shown, the push-pull tab 5010 has afront portion 5014 which resides in a groove 5075 within the front body5001. Thus, when the push-pull tab 5010 traverses the connector alonggroove 5075, as discussed in detail herein, the front portion 5014 movesindependently of the front body 5001. A further embodiment is shown inFIG. 50B wherein the CS connector is assembled completely except for theremovable dust cap 5007. A recess 5017 accepts the hook tips.

As discussed herein, CS connectors can come in various embodiments. Forexample, some CS connectors 5100, such as that shown in FIGS.51A.1-51A.2 may be configured to have a normal cable boot (e.g., be onthe front side of a fiber optic patch panel) or at the distal end 5150of the connector. Alternatively, some CS connectors, such as that shownin FIG. 51B.1-51B.2, may be configured to have a BTW boot (e.g., thoseconnectors that are behind or on the back side of a fiber optic patchpanel). As shown, the ferrule pitch (i.e., the distance between thecenter point of the ferrules may be equal in the various connector types(3.8 mm as shown). The pull tab ramp profile 5120 remains unchanged bythe boot type of FIGS. 51A.1-51A.2 or FIGS. 51B.1-51B.2.

As discussed herein, a connector (e.g., CS connector) may come invarious embodiments. By way of example, and referring now to FIGS. 52Aand 52B, an embodiment of a CS connector 5200 is shown exploded fordetail. In some embodiments, the CS connector may comprise a front body(i.e., plug frame) 5201, which houses a thin MT ferrule 5202 designedfor multi-fiber uses, at its proximal end 5218. Referring to FIG. 52A,the push-pull tab 5210 may utilize a tab spring 5208 to apply a constantdirectional force on the push-pull tab to allow for various benefitswhich are discussed herein. In some embodiments, and as shown, thepush-pull tab 5210 has a front portion 5214 which resides in the groove5275 within the front body 5201. The front portion 5214 includes theramp area 5020. Thus, when the push-pull tab 5210 traverses theconnector, as discussed in detail herein, the front portion 5214 movesindependently of the front body 5201 and the ramp area 5020 can engagethe hook tips.

Referring to FIG. 52B. in some embodiments, an MT ferrule may have a rowof ferrules and/or fiber strands (e.g., 12 fibers, 24 fibers, 48 fibers,etc.) or multiple rows of ferrules and/or fiber strands (e.g., 2 rows, 3rows, 4 rows, etc.) for up to 72 fibers per ferrule. The ferrules and/orfibers may be located at the front of the MT ferrule 5202 (e.g., at 5202a and 5202 b). A rear body (i.e., back post) 5204 may connect to therear of the front body 5201 and contain the MT ferrule 5202. The MTferrule 5202 may be held in place using one or more springs 5203. Therear body 5204, as shown, may include a crimp ring 5205 attached to therear of the rear body. In some embodiments, a cable boot 5206 maysurround the crimp ring 5205. In some embodiments, and as shown, a dustcap 5207 may be placed over the front body 5201 in order to protect theferrules and/or fibers housed in the front body from damage and/ordebris.

In additional embodiments, a push-pull tab 5210 may attach to the CSconnector 5200, as discussed in more detail herein at FIG. 52A. Thepush-pull tab 5210 may have a side portion 5212 and a center protrusion(i.e., 5214), which serve various functions discussed further herein.The side portion 5212 connects the pull tab to the rear body 5204. Thefront portion ramp area 5214 engages the middle hook tip 3822 to deformit while the connector 5200 is being inserted into the adapter.Referring to FIG. 52C a MPO connector 5200 is inserted into single portadapter at a first side and the CS connector 2800C is inserted into thesecond side of the adapter. This allows the interconnection orcommunication of two different push/pull type connector types using thesame patch cord adapter 4000.

As shown in FIG. 52D, the MT ferrule connectors can also utilize theconnection methods discussed above (e.g., the push-pull tab and MPOconnector interconnection). FIG. 52E shows a detailed view of the MTthin ferrule 5200E. The ferrule length, width and thickness are reducedover the prior art ferrule assemblies.

In some embodiments, and as discussed herein (see FIG. 34), CSconnectors may have push-pull tabs of various size and shape, which maygenerally be 8 mm to 6.4 mm.′

In some embodiments, the push-pull tab may be modified to increase thegrip ability of the push-pull tab in various environments. As shown inFIGS. 53A-53J, various push-pull tabs may be utilized by an embodiment(e.g., 5310A, 5310B, and 5310C). It should be understood that these aresimply non-limiting illustrations for explanatory purposes, and thatvarious other embodiments may exist including combinations of thoseshown.

Similar to the normal boot connectors shown in FIGS. 53A-53J, BTWconnectors may also have push-pull tabs of various size and shape. Insome embodiments, the push-pull tab may be modified to increase the gripability of the push-pull tab in various environments. As further shownin FIGS. 53A-53J, various push-pull tabs may be utilized by anembodiment (e.g., 5310D and 5310E).

In one or more further embodiments, a push-pull tab may have amodifiable design. For example, an embodiment, as shown in FIGS.54A-54A.1, may have a hinge 5419 that connects a first portion 5410.1 ofthe push pull tab with a second portion 5410.2 of the push-pull tab. Asshown in FIGS. 54A-54A.1, the hinged or deformable portion 5419 allowsfor the first portion 5410.1 to be elevated and/or angled away from themain body (e.g., the boot) to allow for easier gripping of the tab. Asshown, the first portion 5410.1 and second portion 5410.2 may bearranged in various portions with respect to each other. The deformableportion may be a scored providing a point of weakness to bend the pulltab knob 5410.1 out of the way.

For example, FIGS. 54B-54B.1 shows the first portion 5410.1 and thesecond portion 5410.2 substantially in a parallel line as the firstportion is brought down toward the boot of the CS connector.Alternatively, FIG. 54C shows an embodiment wherein the first portion5410.1 of the push-pull tab has been lifted or moved along thedeformable region 5419. This foldable tail design allows for spacesavings during install, while also having the ability to fold up andthus making it easier to handle. Moreover, a support structure at thefolding groove allows pushing action to make installation of theconnector easier in the folded position. In some additional embodiments,such as those shown in FIGS. 55A, 55B, and 55C the push-pull tab 5510may be removably connected to the CS connector via a moveable sideportion 5512.

Referring now to FIG. 56A, an embodiment of a CS connector is shownexploded for detail. It should be noted that this visual example is forexplanatory purposes, and that various alternative examples may exist,some of which are discussed herein. In some embodiments, a CS connectormay be a miniature single-position plug generally characterized by dualcylindrical, spring-loaded butting ferrule(s) of approximately 1.25 mmin diameter, and a push-pull coupling mechanism. In some embodiments,the optical alignment mechanism of the connectors is of a rigid hole ora resilient sleeve style.

Still referring to FIG. 56A, in some embodiments, the CS connector maycomprise a front body (i.e., plug frame) 5601, which houses theferrule(s) and ferrules flange(s) 5602. The front body 5601 may have, asshown, a flexible latching mechanism 5601.1. As discussed furtherherein, the flexible latching mechanism (or bend latch) 5600 mayinterlock with a corresponding latching mechanism in one or moreadapter/transceiver port housings.

A rear body (i.e., back post) 5604 may connect to the rear of the frontbody 5601 and contain the ferrule-flange(s) 5602. The ferrule-flange(s)5602 may be held in place using one or more springs 5603. The rear body5604, as shown, may include a crimp ring 5605 attached to the rear ofthe rear body. The bend latch 5601 has two adapter engagement surfaces5620 that upon full insertion of the connector 5600 into the port of theadapter or transceiver 6000, the surfaces 5620 are secured at theadapter to hook engagement surfaces or adapter cutouts 6010, as shown inFIG. 59H and FIG. 62G. In some embodiments, a cable boot 5606 maysurround the crimp ring 5605. In further embodiments, and as shown, adust cap 5607 may be placed over the front body 5601 in order to protectthe ferrules housed in the front body from damage and/or debris. FIGS.56B and 56C show example embodiments including dimensions of potentialCS connectors with a flexible latching mechanism 5601.1.

Referring now to FIG. 57A, an embodiment of a CS connector is shownexploded for detail. It should be noted that this visual example is forexplanatory purposes, and that various alternative examples may exist,some of which are discussed herein. In some embodiments, a CS connectormay be a miniature single-position plug generally characterized by dualcylindrical, spring-loaded butting ferrule(s) of approximately 1.25 mmin diameter, and a push-pull coupling mechanism. In some embodiments,the optical alignment mechanism of the connectors is of a rigid hole ora resilient sleeve style.

In some embodiments, the CS connector may comprise a front body (i.e.,plug frame), which houses the ferrule(s) and ferrules flange(s) 5702.The front body 5715 may have, as shown, a flexible latching mechanism5701.1 and a latch engagement surface 5701.2. The flexible or bend latchhas latch adapter contact surfaces 5720 that seat behind the adapter tohook engagement surfaces or adapter cutouts 6010 upon insertion of theconnector 5700 into a port.

A rear body (i.e., back post) 5704 may connect to the rear of the frontbody 5715 and contain the ferrule-flange(s) 5702. The ferrule-flange(s)5702 may be held in place using one or more springs 5703. The rear body5704, as shown, may connect to a behind the wall (BTW) fiber boot 5718.The front body 5715 integrates the adapter latch 5701 into one piece. Insome embodiments, and as shown, a dust cap 5707 may be placed over thefront body 5715 in order to protect the ferrules housed in the frontbody from damage and/or debris. FIGS. 57B and 57C show exampleembodiments including dimensions of potential CS connectors with aflexible latching mechanism 5701.1 and a BTW fiber boot 5718. FIG. 57Cshows the direction of the press on the latch to release the connectorfrom the adapter.

Various CS style connectors have been discussed herein. In order to pairtwo connectors, or transfer data to a transceiver, an adapter 5800device is needed to securely fasten one or more connectors into a properorientation. As shown in FIG. 58A, in some embodiments, an adapter maybe a simplex adapter (i.e., only capable of accepting a single connecterper side). As shown, an adapter 5800 may have an adapter housing 5841.The adapter housing 5841 may comprise one or more flanges 5842 and oneor more top hook support rails 5843. In some embodiments, the top hooksupport rails 5843 allow for insertion and securing of a CS adapter hook5844.

In further embodiments, the adapter housing 5841 may comprise anintegrated mounting plate 5845. The adapter housing 5841 may alsocomprise a multi-function recess 5846. The multi-function recess 5846may be used for a variety of purposes (e.g., fitting in particular fiberarrays, etc.). In the non-limiting example shown in FIG. 58A, themulti-function recess allows for the CS adapter mounting plate 5888. Insome embodiment, the adapter may have one or more alignment sleeves 5847and one or more sleeve holders 5848. Referring now to FIG. 58B, in someembodiments, the interior base of the adapter may have a guide rail 5835and at the top hook support rails 5843. As discussed herein, the guiderail helps align the CS connector to guarantee the most secure andproper connections. The adapter to hook engagement surfaces or adaptercutouts 6010 secure a hook in the adapter port. FIG. 58C is a furtherdetailed angle for the adapter showing the various parts, such as themounting plate 5888, the top hook support rails 5843, one or moreflanges 5842, and the removable hook 5844 for a MPO connector 5200.FIGS. 58D-58D.1 show the outer dimensions of the CS connector frontportion of the CS connector 5800C of the present invention.

Referring now to FIGS. 59A.1-A.2, an adapter may comprise one or moreflanges 5942. The flanges are typically utilized when securing anadapter to a fiber connector array. However, FIGS. 59B.1-59B.2illustrate an alternative design for an adapter, wherein the one or moreflanges are no longer present. FIG. 59C illustrates the versatility ofthe adapter. Specifically, various hook designs are capable of beingincorporated into the adapter housing at FIG. 59C.1. A hook selectedfrom a hook 3644, 3744 or 3844 (as none limiting choices) is insertedinto the port as shown in FIG. 59C.2 or FIG. 59C.3. The hook 3844 isretained by the top hook support rail 5843, and the guides rails 5935,5940 align and mate the connector front portion within the port, asshown in FIG. 59C.4 or FIG. 59C.5, upon insertion of the connector intothe adapter.

FIGS. 59D.1-59D.2 and FIGS. 59E-59E.2 show hook type 3844 of FIGS. 38A-Cinteracting with the recess 2817 of FIG. 28D and the adapter portstructure 6241 and how they interact with a connector (e.g., such asthat discussed herein.) FIGS. 59F.1-59F.5 shows the steps to insert thehook 3844 into the port of the adapter base 6000. Starting with theupper left hand corner figure, the adapter base 6000 has no hookinserted into the adapter port. Continuing clockwise following thearrow, the hooks 3844 are shown before insertion. The next figure showsthe adapter with the hooks included, then continuing clockwise, theconnector 5900D is shown just prior to insertion. The last figure showsthe connector 5900D fully inserted into the port of the adapter base6000.

FIGS. 59G.1-59G.3 show the latch type connectors similar to FIGS. 57A-Cbefore and after insertion into an adapter base. The bend latchconnector does not require an adapter hook as the front body 5715 isadapted to engage the adapter rails 3635 of FIG. 36A and the adapterhook support 3660. FIGS. 59G.1-59G.3 show the bend latch connector ofFIGS. 57A-C and the push/pull connector of FIGS. 51A.1-A.2 and 52A-Bbeing inserted into an adapter on either side, where the latter adapterport uses the hook to secure the push/pull connector into the adapter.FIG. 59H shows the bend latch connector 5600 prior to insertion. Theconnector latch contact points 5915H engage and seat at the adapter tohook engagement surfaces or adapter cutouts 6010 upon insertion. Pushingin the connector 5600, the latch is depressed along the latch engagementsurface 5601.2 by the port inner structure and clicks into place.

Removal of the bend latch connector 5600 from the adapter or transceiverport is shown in FIGS. 62G-62I. FIG. 62G shows the connector 5600 fullyinserted and seated in the adapter 6000 opening or port. Referring toFIG. 59H, once the connector 5600 is inserted, the connector latchpoints 5915H engage with the adapter to hook engagement surfaces oradapter cutouts 6010, and the connector is secured in the adapter. Theconnector 5600 is inserted through the adapter port 6020.

To remove the bend latch connector, the user presses the latch featuredown (FIG. 62H), the connector latch point 5915H moves down below 6240Hthe adapter to hook engagement surfaces or adapter cutouts 6010, and theuser can then pull the latch rearward in the direction of the arrow(FIG. 62I) and pull out 62301 the connector 5600.

As stated, in order to pair two connectors, or transfer data to atransceiver, an adapter device is needed to securely fasten one or moreconnectors into a proper orientation. As shown in FIG. 60A, in someembodiments, an adapter may be a duplex adapter (i.e., capable ofaccepting a two connecters per side). As shown, an adapter may have anadapter housing 6041. The adapter housing 6041 may comprise one or moreflanges 6042 and one or more cut out windows 6041. In some embodiments,the window cutouts 6041 allow for insertion and securing of a CS adapterhook 6044. The adapter to hook engagement surfaces or adapter cutouts6010 secures the connector latch point 5915H or the hook 3844 within theport 6020 of the adapter 6000.

In further embodiments, the adapter housing 6041 may comprise anintegrated mounting plate 6045. The adapter housing 6041 may alsocomprise a multi-function recess 6046. The multi-function recess 6046may be used for a variety of purposes (e.g., fitting in particular fiberarrays, etc.). In the non-limiting example shown in FIG. 60A, themulti-function recess allows for the CS adapter mounting plate 6044. Insome embodiment, the adapter may have one or more sleeves 6047 (as shownin FIG. 60D.1) and one or more sleeve holders 6048. Referring now toFIG. 60B, in some embodiments, the interior base of the adapter may havea guide rail 6035, and a top hook support rail 6043. As discussedherein, the rail structures that help align and orient the CS connectorto guarantee the most secure and proper connections between opposingconnector optical ferrules.

FIGS. 60C-60H show various additional angles and views of a duplexadapter 6000. FIGS. 60D and 60D.1 illustrate an example embodiment wherethe sleeves 6048 fit into the housing before installing the hook(s)6044. FIG. 60E illustrates an example embodiment showing a partial crosssection of FIGS. 60C and 60D showing partial insertion of a sleeveholder and alignment sleeves into a low profile, compact adapterhousing. Referring to FIGS. 60D, 60D.1, 60E and 60F-60F.1, the adaptertop hook support rail 6043 secures the hook 3844 in the top portion ofthe port as shown in FIG. 35A AD1, AD2 and FIG. 39. The guide rails 6035orient and help align the front portion 2801 of the connector 2800C or5600 upon insertion into the adapter port 6020. The adapter recess 6052accepts a corresponding protrusion (not shown) on the outer surface of aconnector front body 2801. The above structure is similarly used in atransceiver port.

Referring to FIG. 60E, this figure illustrates a sleeve holder 6048 thatcan accept one or more sleeves 6047 partially inserted into an adapterport. A sleeve holder with one sleeve of the present invention can beused in a single port adapter, such as FIG. 58C, without departing fromthe scope of the invention. A sleeve holder is formed of one piece witha back flange having opposing wings 6053 at a top portion and a pairtabs 6050 (e.g. FIG. 60F) at a bottom portion. The wings can be alongany side. The tabs likewise can be along any side. Other structuralfeatures such as pins can be used without departing from the scope ofthe invention to secure the sleeve holder in the port. The sleeve holderis press fitted into the adapter port, and the wings 6053 snap into arespective cutout 6049, as shown by the dotted line 6051. Referring toFIG. 60F.1, the section view shows the wings 6053 snapped into thecutout 6049, and the tabs 6055 final position. The hidden line 6054further shows the wing 6053 snapped into the adapter cutout 6049. FIG.60G.1 section view shows the tabs 6055 secured at bottom portion of theport. FIG. 60G is a side perspective view of an adapter 6000. FIGS.60H-60H.1 illustrate a side view with a cut-away showing the sleeveholder 6048 latched within an adapter 6000. In FIG. 60H instead of a tablocated at the bottom of the sleeve holder flange, a wing 6050 is used.FIG. 60H.1 is a zoomed view of FIG. 60H.

Referring now to FIGS. 61A.1-61A.2, an adapter 6000 may comprise one ormore flanges 6142. The flanges 6142 are typically utilized when securingan adapter to a fiber connector array. However, FIGS. 61B.1-61B.2illustrate an alternative design for an adapter, wherein the one or moreflanges are no longer present. Referring to FIGS. 61C-61C.1, the frontand top side view of a duplex adapter 6000 with inserted hooks 6144 andsleeve holders 6120C. Specifically, this embodiment shows the locationof the guide rails 6135 as well as the sleeve holders 6120C and adapterhooks 6144.

As discussed herein, in some embodiments, a CS connector may have aflexible latching mechanism. Referring now to FIGS. 62A-62F, anillustrated example of a flexible latching mechanism interlocking withan adapter is shown. In FIG. 62A, the connector 6200 is shown just priorto entry into the adapter 6041, which has guide rail 6249. FIGS. 62B-62Dshow the insertion process wherein the connector 6200 is compressed (seeFIG. 62D) as the flexible latching mechanism is pressed down as theconnector enters the adapter 6241. FIGS. 62E and 62F show the connector6200 fully inserted into adapter 6241.

FIGS. 63A, 63B, and 63C illustrate an example embodiment where a simplexadapter 6341 is being utilized with two CS connectors 5600 using theflexible latching or bend latch mechanism means of interlocking. Theplug frame 6301 of connector 5600 engages the bottom guide rails 6235within the port to further secure the connector in the adapter. FIGS.63A-63C.5 illustrate removing the bend latch connector 5600 from theport of the adapter 6000 by depressing the latch 6301.1 in the directionof the arrow. Upon pulling out the connector 5600 in the direction ofthe arrow 6312C, the connector latch points 5620 slide beneath theadapter latch points 6310C, releasing the connector 5600 as shown inFIGS. 63C.4-63C.5.

FIGS. 64A and 64B illustrate an example embodiment where a duplexadapter 6441 is being utilized with four CS connectors 6400 using aflexible latching mechanism means of interlocking. FIGS. 65A and 65Billustrate an example embodiment where a simplex adapter 6541 is beingutilized with two CS connectors 6501.1 and 6501.2 using the flexiblelatching mechanism or bend latch 5600 means of interlocking. The firstside of the adapter has the bend latch behind the wall connector 5700inserted therein, and the second side has the bend latch connector 5600with the ruggedized boot. However, unlike FIGS. 63A and 63B, one of theCS connectors 6501.2 is constructed of a BTW fiber boot. Thus, asdiscussed herein, this implementation could be used in a fiber opticpatch panel wherein one side of the adapter is behind the wall, and theother is front facing. Referring to FIGS. 63C.1-63C.5 an embodiment isshown wherein a connector has a flexible latching mechanism 6301.1, andwherein that flexible latch mechanism is depressed causing the latchmechanism to lose contact between the latching surfaces of the adapter.The connector is then free to slide backward under the adapter latching6310C feature as shown in the progression of the illustrations.

As discussed herein, specifically FIGS. 35-40F.1, adapters and/ortransceivers can be modified using a removable anchor device (e.g.,5844, 6044, etc.). Accordingly, in some embodiments an adapter may beutilized the anchor device on one side, but not the other. Referring nowto FIGS. 66A and 66B, embodiments are shown wherein one side of theadapter includes the removable anchor device 6644, while the other sideof the adapter does not. Thus, as shown in FIGS. 66A and 66B, an adaptermay be used with different types of CS connectors (e.g., those withflexible latching mechanisms (e.g., FIG. 56C), and those with push-pulltab release (e.g., FIG. 28B). FIGS. 67A, 67B, 68A, and 68B illustratefurther example embodiments wherein an adapter (e.g., simplex or duplex)is utilized, and, similar to FIGS. 66A and 66B, the CS connectors oneach side are of a different type. In FIG. 67A one side of the adapter6741 has hooks 6744 inserted into the port and the opposite or secondside has no hooks. The push/pull tab connector 2800C is inserted intothe first side 6701.1, and the bend latch connector 5600 is insertedinto the second side 6701.2 of the adapter 6741. Referring to FIG. 68B,the same quad adapter with hooks 6844 on the first side, and no hooks onthe second side, have the push/pull tab connector 6801.1 inserted intothe first side, and the bend latch behind the wall connector 6801.2inserted in the second side to form a communication path between theconnector types.

Referring now to FIGS. 69A.1-B, a removal tool is shown, which may allowfor removal of the removable anchor devices. FIGS. 69A.1-69A.2 show aside, front, and sectional view of the tool, which may be made out of ametal, metal alloy, polymer, or any substance of sufficient structuralstrength to perform the task of removing the anchor device. AS shown inFIG. 69B, the tool is designed to interlock with the removable anchorvia a protrusion 6941 and a hook 6942 which both interlock withcorresponding members in the anchor device (e.g., a window and ledge).Additional illustrative examples of the tool being used to remove theanchor device are shown in FIGS. 70A-F.

In the above detailed description, reference is made to the accompanyingdrawings, which form a part hereof. In the drawings, similar symbolstypically identify similar components, unless context dictatesotherwise. The illustrative embodiments described in the detaileddescription, drawings, and claims are not meant to be limiting. Otherembodiments may be used, and other changes may be made, withoutdeparting from the spirit or scope of the subject matter presentedherein. It will be readily understood that the aspects of the presentdisclosure, as generally described herein, and illustrated in theFigures, can be arranged, substituted, combined, separated, and designedin a wide variety of different configurations, all of which areexplicitly contemplated herein.

The present disclosure is not to be limited in terms of the particularembodiments described in this application, which are intended asillustrations of various aspects. Many modifications and variations canbe made without departing from its spirit and scope, as will be apparentto those skilled in the art. Functionally equivalent methods andapparatuses within the scope of the disclosure, in addition to thoseenumerated herein, will be apparent to those skilled in the art from theforegoing descriptions. Such modifications and variations are intendedto fall within the scope of the appended claims. The present disclosureis to be limited only by the terms of the appended claims, along withthe full scope of equivalents to which such claims are entitled. It isto be understood that this disclosure is not limited to particularmethods, reagents, compounds, compositions, or biological systems, whichcan, of course, vary. It is also to be understood that the terminologyused herein is for the purpose of describing particular embodimentsonly, and is not intended to be limiting.

With respect to the use of substantially any plural and/or singularterms herein, those having skill in the art can translate from theplural to the singular and/or from the singular to the plural as isappropriate to the context and/or application. The varioussingular/plural permutations may be expressly set forth herein for sakeof clarity.

It will be understood by those within the art that, in general, termsused herein, and especially in the appended claims (for example, bodiesof the appended claims) are generally intended as “open” terms (forexample, the term “including” should be interpreted as “including butnot limited to,” the term “having” should be interpreted as “having atleast,” the term “includes” should be interpreted as “includes but isnot limited to,” et cetera). While various compositions, methods, anddevices are described in terms of “comprising” various components orsteps (interpreted as meaning “including, but not limited to”), thecompositions, methods, and devices can also “consist essentially of” or“consist of” the various components and steps, and such terminologyshould be interpreted as defining essentially closed-member groups. Itwill be further understood by those within the art that if a specificnumber of an introduced claim recitation is intended, such an intentwill be explicitly recited in the claim, and in the absence of suchrecitation no such intent is present. For example, as an aid tounderstanding, the following appended claims may contain usage of theintroductory phrases “at least one” and “one or more” to introduce claimrecitations. However, the use of such phrases should not be construed toimply that the introduction of a claim recitation by the indefinitearticles “a” or “an” limits any particular claim containing suchintroduced claim recitation to embodiments containing only one suchrecitation, even when the same claim includes the introductory phrases“one or more” or “at least one” and indefinite articles such as “a” or“an” (for example, “a” and/or “an” should be interpreted to mean “atleast one” or “one or more”); the same holds true for the use ofdefinite articles used to introduce claim recitations. In addition, evenif a specific number of an introduced claim recitation is explicitlyrecited, those skilled in the art will recognize that such recitationshould be interpreted to mean at least the recited number (for example,the bare recitation of “two recitations,” without other modifiers, meansat least two recitations, or two or more recitations). Furthermore, inthose instances where a convention analogous to “at least one of A, B,and C, et cetera” is used, in general such a construction is intended inthe sense one having skill in the art would understand the convention(for example, “a system having at least one of A, B, and C” wouldinclude but not be limited to systems that have A alone, B alone, Calone, A and B together, A and C together, B and C together, and/or A,B, and C together, et cetera). In those instances where a conventionanalogous to “at least one of A, B, or C, et cetera” is used, in generalsuch a construction is intended in the sense one having skill in the artwould understand the convention (for example, “a system having at leastone of A, B, or C” would include but not be limited to systems that haveA alone, B alone, C alone, A and B together, A and C together, B and Ctogether, and/or A, B, and C together, et cetera). It will be furtherunderstood by those within the art that virtually any disjunctive wordand/or phrase presenting two or more alternative terms, whether in thedescription, claims, or drawings, should be understood to contemplatethe possibilities of including one of the terms, either of the terms, orboth terms. For example, the phrase “A or B” will be understood toinclude the possibilities of “A” or “B” or “A and B.”

In addition, where features or aspects of the disclosure are describedin terms of Markush groups, those skilled in the art will recognize thatthe disclosure is also thereby described in terms of any individualmember or subgroup of members of the Markush group.

As will be understood by one skilled in the art, for any and allpurposes, such as in terms of providing a written description, allranges disclosed herein also encompass any and all possible subrangesand combinations of subranges thereof. Any listed range can be easilyrecognized as sufficiently describing and enabling the same range beingbroken down into at least equal halves, thirds, quarters, fifths,tenths, et cetera As a non-limiting example, each range discussed hereincan be readily broken down into a lower third, middle third and upperthird, et cetera As will also be understood by one skilled in the artall language such as “up to,” “at least,” and the like include thenumber recited and refer to ranges which can be subsequently broken downinto subranges as discussed above. Finally, as will be understood by oneskilled in the art, a range includes each individual member. Thus, forexample, a group having 1-3 cells refers to groups having 1, 2, or 3cells. Similarly, a group having 1-5 cells refers to groups having 1, 2,3, 4, or 5 cells, and so forth.

Various of the above-disclosed and other features and functions, oralternatives thereof, may be combined into many other different systemsor applications. Various presently unforeseen or unanticipatedalternatives, modifications, variations, or improvements therein may besubsequently made by those skilled in the art, each of which is alsointended to be encompassed by the disclosed embodiments.

What is claimed is:
 1. An optical fiber connector configured for matingwith an adapter, the optical fiber connector comprising: an MT ferruleconfigured to hold a plurality of optical fibers; a front body having afront end portion and a rear end portion, the front body configured toreceive a portion of the MT ferrule such that the MT ferrule is exposedthrough the front end portion for making an optical connection; a rearbody configured to connect to the rear end portion of the front body toretain the MT ferrule in the front body; and a latch release slidablydisposed on the front body for movement relative to the front body alongthe longitudinal axis between a forward position and a rearwardposition, wherein when the optical fiber connector is mated with theadapter and the latch release is in the forward position, the opticalfiber connector is configured to latch with the adapter to retain theoptical fiber connector in the adapter, and wherein when the opticalfiber connector is mated with the adapter, the latch release isconfigured to unlatch the optical fiber connector from the adapter whenthe latch release is pulled from the forward position to the rearward.2. The optical fiber connector as set forth in claim 1, wherein thefront body has a generally rectangular perimeter including oppositefirst and second walls and opposite third and fourth walls, the latchrelease being slidably disposed on the first wall.
 3. The optical fiberconnector as set forth in claim 2, wherein the first wall comprises alongitudinal groove, the latch release being slidably disposed in thelongitudinal groove.
 4. The optical fiber connector as set forth inclaim 3, wherein the latch release comprises a lower tongue portion andan upper portion, the lower tongue portion being wider than the upperportion.
 5. The optical fiber connector as set forth in claim 5, whereinthe longitudinal groove comprises a inner portion and an outer portion,the inner portion being wider than the outer portion, the inner portionof the groove being configured to slidably receive the lower tongueportion of the latch release and the outer portion of the groove beingconfigured to slidably receive the upper portion of the latch releasesuch that the first wall releasably retains the latch release in thegroove.
 6. The optical fiber connector as set forth in claim 3, whereinthird and fourth walls are devoid of grooves for slidably receiving thelatch release.
 8. The optical fiber connector as set forth in claim 1,wherein the rear body includes a back post.
 9. The optical fiberconnector as set forth in claim 1, further comprising a ferrule springcompressed between the ferrule and the rear body.
 10. The optical fiberconnector as set forth in claim 1, wherein the latch release isremovable from the front body.
 11. The optical fiber connector as setforth in claim 1, further comprising a cable boot member.
 12. Theoptical fiber connector as set forth in claim 11, wherein the latchrelease is removably connected to the cable boot member.
 13. The opticalfiber connector as set forth in claim 11, wherein the latch releasecomprises opposite side portions configured to be disposed around aportion of the cable boot.
 14. A connection system comprising theoptical fiber connector of claim 1 and an adapter with which the opticalfiber connector is configured to mate.
 15. The connection system as setforth in claim 14, further comprising a bendable latch.
 16. Theconnection system as set forth in claim 15, wherein when the opticalfiber connector is mated with the adapter, the latch release isconfigured to compress the bendable latch as the latch release is pulledfrom the forward position to the rearward to release the optical fiberconnector from the adapter.
 17. The connection system as set forth inclaim 15, wherein the adapter comprises a rectangular perimeterincluding opposite first and second wall portions and opposite third andfourth wall portions.
 18. The connection system as set forth in claim17, wherein the first wall portion of the adapter comprises a recess,the recess accepting a portion of the bendable latch such that, when theoptical fiber connector is mated with the adapter and the latch releaseis in the forward position, the latch holds the optical fiber connectorin the adapter.
 19. An adapter for a fiber optic connection system, theadapter comprising: a perimeter wall defining a rectangular port, therectangular port being configured to receive an optical fiber connectorcomprising a MT ferrule therein, the perimeter wall comprising oppositefirst and second wall portions and opposite third and fourth wallportions, the first wall portion comprising a recess configured toaccept a bendable latch configured to hold the optical fiber connectorin the port.
 20. The adapter as set forth in claim 19, wherein thesecond, third, and fourth walls are devoid of any recesses capable ofaccepting the bendable latch.